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toughening的翻译，读音

英/'tʌfnɪŋ/

释义：

单词toughening书写

v. （使某物[人]）坚韧, 坚强, 强硬( toughen的现在分词 )
p. pr. & vb. n. of Toughen

词态

现在分词 toughening

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