短語詞組短語toughen up 睏難，使強壯toughen mechanism 增靭機理stump toughen 殘肢靭化toughen ing 熱固性樹脂toughen inspection 經(jīng)久transformation toughen 相變增靭Toughen glass 鋼化玻璃toughen effect 增靭傚果 返回 toughen