python
diff --git a/‎extending/newtypes_tutorial.po‎
Lines changed: 5 additions & 1 deletion b/‎extending/newtypes_tutorial.po‎
Lines changed: 5 additions & 1 deletion
@@ -6,6 +6,7 @@
 # Translators:
 # tomo, 2018
 # Osamu NAKAMURA, 2019
+# Yuta Kanzawa, 2019
 # 
 #, fuzzy
 msgid ""
@@ -14,7 +15,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2019-12-17 18:25+0900\n"
 "PO-Revision-Date: 2018-06-29 17:45+0000\n"
-"Last-Translator: Osamu NAKAMURA, 2019\n"
+"Last-Translator: Yuta Kanzawa, 2019\n"
 "Language-Team: Japanese (https://www.transifex.com/python-doc/teams/5390/ja/)\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -414,6 +415,9 @@ msgid ""
 "argument.  Otherwise, the compiler will emit a warning.  This is object-"
 "oriented polymorphism, in C!"
 msgstr ""
+"上の ``destructor`` への明示的な型変換は必要です。なぜなら、 ``Custom_dealloc`` が ``CustomObject "
+"*`` 引数をとると定義しましたが、 ``tp_dealloc`` 関数のポインタは ``PyObject *`` "
+"引数を受け取ることになっているからです。もし明示的に型変換をしなければ、コンパイラが警告を発するでしょう。これは、Cにおけるオブジェクト指向のポリモーフィズムです！"
 
 #: /home/travis/build/python/cpython-doc-catalog/Doc/extending/newtypes_tutorial.rst:285
 msgid ""