python
diff --git a/‎tutorial/introduction.po‎
Lines changed: 7 additions & 10 deletions b/‎tutorial/introduction.po‎
Lines changed: 7 additions & 10 deletions
@@ -11,7 +11,6 @@
 # Fred <[email protected]>, 2018
 # Junkai Shao <[email protected]>, 2018
 # Shengjing Zhu <[email protected]>, 2019
-# Freesand Leo <[email protected]>, 2019
 # jaystone776 <[email protected]>, 2021
 # 
 #, fuzzy
@@ -365,7 +364,7 @@ msgstr ":ref:`old-string-formatting`"
 msgid ""
 "The old formatting operations invoked when strings are the left operand of "
 "the ``%`` operator are described in more detail here."
-msgstr "这里详述了使用 ``%`` 运算符进行字符串格式化。"
+msgstr "这里详述了用 ``%`` 运算符格式化字符串的操作。"
 
 #: ../../tutorial/introduction.rst:375
 msgid "Lists"
@@ -379,33 +378,31 @@ msgid ""
 "contain items of different types, but usually the items all have the same "
 "type. ::"
 msgstr ""
-"Python 中可以通过组合一些值得到多种 *复合* 数据类型。其中最常用的 *列表* ，可以通过方括号括起、逗号分隔的一组值得到。一个 *列表* "
-"可以包含不同类型的元素，但通常使用时各个元素类型相同::"
+"Python 支持多种 *复合* 数据类型，可将不同值组合在一起。最常用的是 *列表* ，是用方括号标注，逗号分隔的一组值。*列表* "
+"可以包含不同类型的元素，但一般情况下，各个元素的类型相同："
 
 #: ../../tutorial/introduction.rst:386
 msgid ""
 "Like strings (and all other built-in :term:`sequence` types), lists can be "
 "indexed and sliced::"
-msgstr "和字符串（以及各种内置的 :term:`sequence` 类型）一样，列表也支持索引和切片::"
+msgstr "和字符串（及其他内置 :term:`sequence` 类型）一样，列表也支持索引和切片："
 
 #: ../../tutorial/introduction.rst:396
 msgid ""
 "All slice operations return a new list containing the requested elements.  "
 "This means that the following slice returns a :ref:`shallow copy "
 "<shallow_vs_deep_copy>` of the list::"
-msgstr ""
-"所有的切片操作都返回一个包含所请求元素的新列表。 这意味着以下切片操作会返回列表的一个 :ref:`浅拷贝 "
-"<shallow_vs_deep_copy>`::"
+msgstr "切片操作返回包含请求元素的新列表。以下切片操作会返回列表的 :ref:`浅拷贝 <shallow_vs_deep_copy>`："
 
 #: ../../tutorial/introduction.rst:403
 msgid "Lists also support operations like concatenation::"
-msgstr "列表同样支持拼接操作::"
+msgstr "列表还支持合并操作："
 
 #: ../../tutorial/introduction.rst:408
 msgid ""
 "Unlike strings, which are :term:`immutable`, lists are a :term:`mutable` "
 "type, i.e. it is possible to change their content::"
-msgstr "与 :term:`immutable` 的字符串不同, 列表是一个 :term:`mutable` 类型，就是说，它自己的内容可以改变::"
+msgstr "与 :term:`immutable` 字符串不同, 列表是 :term:`mutable` 类型，就是说，它的内容可以改变："
 
 #: ../../tutorial/introduction.rst:418
 msgid ""