diff --git a/lilac b/lilac
index 853461d..bf9da02 100755
--- a/lilac
+++ b/lilac
@@ -134,8 +134,8 @@ def packages_with_depends(
   for name, deps in nonexistent.items():
     repo.send_error_report(
       repo.lilacinfos[name],
-      subject='软件包 %s 的 lilac.yaml 指定了不存在的依赖',
-      msg = f'软件包 {name} 的 lilac.yaml 指定了 repo_depends，然而其直接或者间接的依赖项 {deps!r} 并不在本仓库中。'
+      subject='The dependency of package %s listed in lilac.yaml is missing',
+      msg = f'The package {name}\'s lilac.yaml mentions a dependency on {deps!r}, but this repository does not contain the direct or indirect dependency {deps!r} .'
     )
 
   sorter = graphlib.TopologicalSorter(dep_building_map)
@@ -344,7 +344,7 @@ def try_pick_some(
           logger.exception('check_update_on_build')
           mod = repo.lilacinfos[pkg]
           repo.send_error_report(
-            mod, subject='%s update_on_build 检查出错', exc=e,
+            mod, subject='%s update_on_build check faces error', exc=e,
           )
           continue
 
@@ -432,10 +432,10 @@ def build_it(
         # e.deps - faileddeps = failed previously
         failed[pkg] = tuple(e.deps)
         if e.deps == faileddeps:
-          msg = f'{pkg} 的依赖 {faileddeps} 打包失败了。'
+          msg = f'The packaging of {pkg} failed due to a failed dependency, {faileddeps}.'
         else:
-          msg = f'{pkg} 缺少依赖 {e.deps}，其中 {faileddeps} 本次打包失败了。'
-        repo.send_error_report(mod, subject='%s 出现依赖问题', msg = msg)
+          msg = f'{pkg} miss dependency {e.deps}, where {faileddeps} failed to package this time.'
+        repo.send_error_report(mod, subject='%s face dependency problems', msg = msg)
       else:
         repo.send_error_report(mod, exc=e, logfile=logfile)
 
@@ -688,8 +688,8 @@ def main(logdir: Path, pkgs_from_args: List[str]) -> None:
     except Exception:
       tb = traceback.format_exc()
       logger.exception('unexpected error')
-      subject = '运行时错误'
-      msg = '调用栈如下：\n\n' + tb
+      subject = 'Error while running'
+      msg = 'Call stack(s) are following:：\n\n' + tb
       REPO.report_error(subject, msg)
 
 def setup() -> Path:
diff --git a/lilac2/api.py b/lilac2/api.py
index 31bcc49..d4a6f7c 100644
--- a/lilac2/api.py
+++ b/lilac2/api.py
@@ -424,7 +424,7 @@ def update_aur_repo() -> None:
     _G.repo.send_error_report(
       _G.mod,
       exc = e,
-      subject = '提交软件包 %s 到 AUR 时出错',
+      subject = 'Pushing package %s to AUR faces error',
     )
 
 def git_pkgbuild_commit() -> None:
diff --git a/lilac2/building.py b/lilac2/building.py
index 9a55a8a..752cefd 100644
--- a/lilac2/building.py
+++ b/lilac2/building.py
@@ -93,8 +93,8 @@ def build_package(
     if staging:
       notify_maintainers(
         repo, lilacinfo,
-        f'{pkgbase} {pkg_version} 刚刚打包了',
-        '软件包已被置于 staging 目录，请查验后手动发布。',
+        f'{pkgbase} {pkg_version} is just packaged',
+        'The package has been placed in the staging directory, please manually check it before publishing it.',
       )
       result = BuildResult.staged()
     else:
diff --git a/lilac2/cmd.py b/lilac2/cmd.py
index bf5a483..c5063a8 100644
--- a/lilac2/cmd.py
+++ b/lilac2/cmd.py
@@ -148,7 +148,7 @@ def child_exited(signum: int, sigframe: Optional[types.FrameType]) -> None:
     outs = outs.replace('\r\n', '\n')
     outs = re.sub(r'.*\r', '', outs)
     if outlen > 1024 ** 3: # larger than 1G
-      outs += '\n\n输出过多，已击杀。\n'
+      outs += '\n\nOutput is quite long, already kiled\n'
     if code != 0:
       # set output by keyword to avoid being included in repr()
       raise subprocess.CalledProcessError(code, cmd, output=outs)
diff --git a/lilac2/mail.py b/lilac2/mail.py
index 28a5476..5ba8ea9 100644
--- a/lilac2/mail.py
+++ b/lilac2/mail.py
@@ -44,7 +44,7 @@ def sendmail(self, to: Union[str, List[str]],
 
     s = self.smtp_connect()
     if len(msg) > 5 * 1024 ** 2:
-      msg = msg[:1024 ** 2] + '\n\n日志过长，省略ing……\n\n' + \
+      msg = msg[:1024 ** 2] + '\n\nLog is quite long and omitted.\n\n' + \
           msg[-1024 ** 2:]
     mail = assemble_mail('[%s] %s' % (
       self.mailtag, subject), to, self.from_, text=msg)
diff --git a/lilac2/nvchecker.py b/lilac2/nvchecker.py
index 3a588e5..bf40778 100644
--- a/lilac2/nvchecker.py
+++ b/lilac2/nvchecker.py
@@ -180,12 +180,12 @@ def packages_need_update(
   for who, their_errors in error_owners.items():
     logger.warning('send nvchecker report for %r packages to %s',
                    {x['name'] for x in their_errors}, who)
-    repo.sendmail(who, 'nvchecker 错误报告',
+    repo.sendmail(who, 'nvchecker error report',
                   '\n'.join(_format_error(e) for e in their_errors))
 
   if None in errors: # errors belong to unknown packages
-    subject = 'nvchecker 问题'
-    msg = '在更新检查时出现了一些错误：\n\n' + '\n'.join(
+    subject = 'nvchecker problem'
+    msg = 'Face some errors while checking updates：\n\n' + '\n'.join(
       _format_error(e) for e in errors[None]) + '\n'
     repo.send_repo_mail(subject, msg)
 
diff --git a/lilac2/repo.py b/lilac2/repo.py
index 225dca7..59332dc 100644
--- a/lilac2/repo.py
+++ b/lilac2/repo.py
@@ -62,7 +62,7 @@ def __init__(self, config: dict[str, Any]) -> None:
   @lru_cache()
   def maintainer_from_github(self, username: str) -> Optional[Maintainer]:
     if self.gh is None:
-      raise ValueError('未设置 github token，无法从 GitHub 取得用户 Email 地址')
+      raise ValueError('github token is not configured, can\'t get user\'s Email address from GitHub')
 
     userinfo = self.gh.get_user_info(username)
     if userinfo['email']:
@@ -86,15 +86,15 @@ def parse_maintainers(
         try:
           u = self.maintainer_from_github(m['github'])
         except Exception as e:
-          errors.append(f'从 GitHub 获取用户 Email 地址时出错：{e!r}')
+          errors.append(f'Face error while getting user\'s Email address from GitHub：{e!r}')
         else:
           if u is None:
-            errors.append(f'GitHub 用户 {m["github"]} 未公开 Email 地址')
+            errors.append(f'There is no public Email address belonging to GitHub user {m["github"]}')
           else:
             ret.append(u)
       else:
         logger.error('unsupported maintainer info: %r', m)
-        errors.append(f'不支持的格式：{m!r}')
+        errors.append(f'unsupported format：{m!r}')
         continue
 
     return ret, errors
@@ -192,8 +192,8 @@ def _find_maintainers_impl(
       error_str = '\n'.join(errors)
       self.sendmail(
         git_maintainer,
-        subject = f'{pkgbase} 的 maintainers 信息有误',
-        msg = f"以下 maintainers 信息有误，请修正。\n\n{error_str}\n",
+        subject = f'{pkgbase}\'s maintainers info error',
+        msg = f"The folloing info of maintainers is error, please check and correct them.\n\n{error_str}\n",
       )
 
     if not ret and fallback_git:
@@ -265,21 +265,21 @@ def send_error_report(
     if exc is not None:
       tb = ''.join(traceback.format_exception(type(exc), exc, exc.__traceback__))
       if isinstance(exc, subprocess.CalledProcessError):
-        subject_real = subject or '在打包软件包 %s 时发生错误'
-        msgs.append('命令执行失败！\n\n命令 %r 返回了错误号 %d。' % (
+        subject_real = subject or 'Face error while packaging %s'
+        msgs.append('CMD face error！\n\ncommand %r return singal %d。' % (
           exc.cmd, exc.returncode))
         if exc.output:
-          msgs.append('命令的输出如下：\n\n%s' % exc.output)
-        msgs.append('调用栈如下：\n\n' + tb)
+          msgs.append('Outpur of command：\n\n%s' % exc.output)
+        msgs.append('Call stack(s) are following：\n\n' + tb)
       elif isinstance(exc, api.AurDownloadError):
-        subject_real = subject or '在获取AUR包 %s 时发生错误'
-        msgs.append('获取AUR包失败！\n\n')
-        msgs.append('调用栈如下：\n\n' + tb)
+        subject_real = subject or 'Error while pulling package %s from AUR'
+        msgs.append('Pulling AUR package failed\n\n')
+        msgs.append('Call stack(s) are following:\n\n' + tb)
       elif isinstance(exc, TimeoutError):
-        subject_real = subject or '打包软件包 %s 超时'
+        subject_real = subject or 'Packaging pkg %s timeout'
       else:
-        subject_real = subject or '在打包软件包 %s 时发生未知错误'
-        msgs.append('发生未知错误！调用栈如下：\n\n' + tb)
+        subject_real = subject or 'Face unknown error while packaging %s'
+        msgs.append('Unknown error occurs, call stack(s) are following：\n\n' + tb)
     else:
       if subject is None:
         raise ValueError('subject should be given but not')
@@ -295,7 +295,7 @@ def send_error_report(
         with logfile.open(errors='replace') as f:
           build_output = f.read()
         if build_output:
-          log_header = '打包日志：'
+          log_header = 'Packaging Log：'
           with suppress(ValueError, KeyError): # invalid template or wrong key
             if self.logurl_template and len(logfile.parts) >= 2:
               # assume the directory name is the time stamp for now.
@@ -338,7 +338,7 @@ def load_managed_lilac_and_report(self) -> dict[str, tuple[str, ...]]:
       if not isinstance(exc, Exception):
         raise
       self.send_error_report(name, exc=exc,
-                             subject='为软件包 %s 载入 lilac.yaml 时失败')
+                             subject='Loading lilac.py for package %s face error')
       build_logger_old.error('%s failed', name)
       build_logger.exception('lilac.yaml error', pkgbase = name, exc_info=exc_info)
 
diff --git a/lilac2/vendor/myutils.py b/lilac2/vendor/myutils.py
index a185938..0c689de 100644
--- a/lilac2/vendor/myutils.py
+++ b/lilac2/vendor/myutils.py
@@ -118,7 +118,7 @@ def getchar(
   end: str = '\n',
   timeout: Optional[float] = None,
 ):
-  '''读取一个字符'''
+  '''Read a character'''
   import termios
   sys.stdout.write(prompt)
   sys.stdout.flush()
@@ -155,7 +155,7 @@ def _read() -> Optional[str]:
   return ch
 
 def loadso(fname):
-  '''ctypes.CDLL 的 wrapper，从 sys.path 中搜索文件'''
+  '''wrapper of ctypes.CDLL, searching file(s) from sys.path'''
   from ctypes import CDLL
 
   for d in sys.path:
diff --git a/lilac2/vendor/serializer.py b/lilac2/vendor/serializer.py
index 8c1a980..f4efdda 100644
--- a/lilac2/vendor/serializer.py
+++ b/lilac2/vendor/serializer.py
@@ -10,13 +10,14 @@
 class Serializer(metaclass=abc.ABCMeta):
   def __init__(self, fname, readonly=False, default=None):
     '''
-    读取文件fname。readonly指定析构时不回存数据
-    如果数据已加锁，将会抛出SerializerError异常
-    default 指出如果文件不存在或为空时的数据
-
-    注意：
-      要正确地写回数据，需要保证此对象在需要写回时依旧存在，或者使用with语句
-      将自身存入其data属性中不可行，原因未知
+    Reading file fname.
+    readonly specifies that the data will not be stored back when it is destructed
+    If the data is locked, a SerializerError exception will be occur
+    default indicates the data if the file does not exist or is empty
+
+    Notice:
+      To write back data correctly, you need to ensure that the object still exists when it needs to be written back or use the `with` statement
+      Storing itself into its data attribute is not feasible considering unknown reasons
     '''
     self.fname = os.path.abspath(fname)
     if readonly:
@@ -38,7 +39,7 @@ def __init__(self, fname, readonly=False, default=None):
             break
           else:
             self.lock = None
-            raise SerializerError('数据已加锁')
+            raise SerializerError('Data is locked')
         with open(self.lock, 'w') as f:
           f.write(str(os.getpid()))
 
@@ -53,7 +54,7 @@ def __init__(self, fname, readonly=False, default=None):
         raise
 
   def __del__(self):
-    '''如果需要，删除 lock，保存文件'''
+    '''If it\'s needed, delete lock，save file(s)'''
     if self.lock:
       self.save()
       os.unlink(self.lock)
diff --git a/lilac2/worker.py b/lilac2/worker.py
index c8b0030..eb5a667 100644
--- a/lilac2/worker.py
+++ b/lilac2/worker.py
@@ -195,7 +195,7 @@ def run_build_cmd(cmd: Cmd) -> None:
       st = os.stat(1)
       if st.st_size > 1024 ** 3: # larger than 1G
         kill_child_processes()
-        logger.error('\n\n输出过多，已击杀。')
+        logger.error('\n\nOutput is quite long and killed.')
     else:
       if code != 0:
         raise subprocess.CalledProcessError(code, cmd)
@@ -264,17 +264,17 @@ def handle_failure(
   if isinstance(e, pkgbuild.ConflictWithOfficialError):
     reason = ''
     if e.groups:
-      reason += f'软件包被加入了官方组：{e.groups}\n'
+      reason += f'Package is added to officail repository: {e.groups}\n'
     if e.packages:
-      reason += f'软件包将取代官方包：{e.packages}\n'
+      reason += f'Package will replace package in offical repository: {e.packages}\n'
     repo.send_error_report(
-      mod, subject='%s 与官方软件库冲突', msg = reason,
+      mod, subject='%s is conflicted with offical repository', msg = reason,
     )
 
   elif isinstance(e, pkgbuild.DowngradingError):
     repo.send_error_report(
-      mod, subject='%s 新打的包比仓库里的包旧',
-      msg=f'包 {e.pkgname} 打的版本为 {e.built_version}，但在仓库里已有较新版本 {e.repo_version}。\n',
+      mod, subject='%s is older than packaged version in this repository',
+      msg=f'Current packaging version of package {e.pkgname} is {e.built_version}, however, already newer version {e.repo_version} in repository\n',
     )
 
   else: