短語詞組用作動詞 (v.)～+名詞harden the body 鍛煉身體harden one 's heart 心腸變硬harden steel 淬火～+副詞harden considerably 很堅硬harden utterly 非常堅定harden in 拉緊harden off 使長壯以移植戶外harden up 變得堅實～+介詞harden into 凝固成harden to 對…變得無動于衷harden toward 對…冷酷無情短語 返回 hardens