tough-as-nails是什么意思

如题所述

tough-as-nails 和hard as nails 意思相近。 

直译为:坚韧的指甲。

引申为:冷酷无情或铁石心肠。

We had better then be as tough as nails. (我们最好要做到冷酷无情.)

He simply looked mean and hard as nails. (他看起来既卑鄙又冷酷无情。)

He's a shrewd businessman and hard as nails. (他是一个既精明又铁石心肠的生意人。)

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