1. 名詞
   不可數名詞: 堅韌, 堅固
   堅硬, 結實
   堅強, 強健
   (指堅韌、牢固的)強硬
   不屈不撓, 韌性
   剛性
   

   同義字詞
   gangster,goon,gorilla,hood,hoodlum,hooligan,mobster,punk,roughneck,rowdy,ruffian
   

例句

1. Toughness runs in her family, too.
2. How does the right judge toughness ?
3. There's a bit of a toughness factor too.
4. This damage is not reduced by Toughness .
5. Athletes call it mental toughness training.
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