The remove logic in Listing 9 is flexible, because I allow the command to be remove or delete followed by the word.
清单9中的删除逻辑是灵活的，因为我允许使用remove或者delete后面加单词的命令。
The remove logic in Listing 9 is flexible, because I allow the command to be remove or delete followed by the word.
清单9中的删除逻辑是灵活的，因为我允许使用remove或者delete后面加单词的命令。
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