英语词汇“toughen”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	toughen
释义	toughen ['tʌfn] -1 v. (使)变坚韧, (使)变顽强时态: toughened, toughening, toughens (15491/20083)\n
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