Update zh_CN.po

src/po/LINGUAS

@@ -4,3 +4,4 @@ fr
 en
 pt_BR
 tr
+zh_CN

src/po/zh_CN.po

@@ -12,11 +12,11 @@ msgstr ""
 "PO-Revision-Date: 2020-06-21 21:57-0400\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
-"Language: en\n"
+"Language: zh_CN\n"
 "MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=ASCII\n"
+"Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
 
 #: res/swappy.glade:456
 msgid "Line Width"
@@ -32,7 +32,7 @@ msgstr "填充"
 
 #: res/swappy.glade:597
 msgid "Toggle shape filling"
-msgstr "切换形状填充"
+msgstr "切换填充状态"
 
 #: res/swappy.glade:671
 msgid "Toggle Paint Panel"
@@ -40,11 +40,11 @@ msgstr "切换绘图板状态"
 
 #: res/swappy.glade:697
 msgid "Undo Last Paint"
-msgstr "撤消最后绘图"
+msgstr "撤销"
 
 #: res/swappy.glade:716
 msgid "Redo Previous Paint"
-msgstr "重复上次绘图"
+msgstr "恢复"
 
 #: res/swappy.glade:735
 msgid "Clear Paints"
@@ -52,7 +52,7 @@ msgstr "清除绘图"
 
 #: res/swappy.glade:763
 msgid "Copy Surface"
-msgstr "复制到剪贴板"
+msgstr "复制"
 
 #: res/swappy.glade:779
 msgid "Save Surface"