python
diff --git a/‎library/email.headerregistry.po‎
Lines changed: 8 additions & 3 deletions b/‎library/email.headerregistry.po‎
Lines changed: 8 additions & 3 deletions
@@ -374,19 +374,22 @@ msgid ""
 " per :rfc:`2045`, then the header object will have non-``None`` values for "
 "the following attributes:"
 msgstr ""
+"实际上 :mailheader:`MIME-Version` 标头只有一个有效的值，即 ``1.0``。 "
+"为了将来的扩展，这个标头类还支持其他的有效版本号。 如果一个版本号是 :rfc:`2045` 的有效值，则标头对象的以下属性将具有不为 ``None``"
+" 的值:"
 
 #: ../../library/email.headerregistry.rst:249
 msgid ""
 "The version number as a string, with any whitespace and/or comments removed."
-msgstr ""
+msgstr "字符串形式的版本号。 任何空格和/或注释都会被移除。"
 
 #: ../../library/email.headerregistry.rst:254
 msgid "The major version number as an integer"
-msgstr ""
+msgstr "整数形式的主版本号"
 
 #: ../../library/email.headerregistry.rst:258
 msgid "The minor version number as an integer"
-msgstr ""
+msgstr "整数形式的次版本号"
 
 #: ../../library/email.headerregistry.rst:263
 msgid ""
@@ -395,6 +398,8 @@ msgid ""
 "take a list of supplemental parameters, which have a common format. This "
 "class serves as a base for all the MIME headers that take parameters."
 msgstr ""
+"MIME 标头都以前缀 'Content-' 打头。 每个特定标头都具有特定的值，其描述在该标头的类之中。 "
+"有些也可以接受一个具有通用格式的补充形参形表。 这个类被用作所有接受形参的 MIME 标头的基类。"
 
 #: ../../library/email.headerregistry.rst:270
 msgid "A dictionary mapping parameter names to parameter values."