导出我们的English-custom翻译所生成的文件，它的前面几行如下所示：
# English-custom translation of Drupal 6
# Copyright (c) 2007 drupalusername <me@example.com>
#
msgid ""
msgstr ""
"Project-Id-Version: PROJECT VERSION\n"
"POT-Creation-Date: 2008-05-09 12:46-0500\n"
"PO-Revision-Date: 2008-05-09 12:46-0500\n"
"Last-Translator: drupalusername <me@example.com>\n"
"Language-Team: English-custom <me@example.com>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=utf-8\n"
"Content-Transfer-Encoding: 8bit\n"
#: /example.com/?q=admin/build/translate/search
msgid "Search"
msgstr "Search now"
#: /example.com/?q=node/add/blog
msgid "blog"
msgstr "journal"
#: /example.com/?q=admin/build/modules/list/confirm
msgid "Blog entry"
msgstr "Journal entry"
#: /example.com/?q=admin/build/translate/search
msgid ""
"A <em>blog entry</em> is a single post to an online journal, or "
"<em>blog</em>."
msgstr "A <em>journal entry</em> is a single post to an online journal."
...
.po文件包含两部分，头部为一些元数据，后面跟着翻译了的字符串。每个字符串包含3部分：1个注释，说明了字符串第一次出现的位置；一个msgid，表示原始字符串；一个msgstr，表示翻译了的字符串。关于.po文件格式的更全面的描述，参看http://www.gnu.org/software/gettext/manual/gettext.html#PO-Files。
使用“管理➤站点构建➤翻译界面”中的导入标签，现在就可以将en-US.po文件导入到另一个Drupal站点中了（该站点也启用了本地模块）。
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