as hard as nails
US /æz hɑrd æz neɪlz/
UK /æz hɑːd æz neɪlz/
成语
非常强硬, 冷酷无情, 铁石心肠
very tough, unsentimental, and ruthless
示例:
•
She's a businesswoman who's as hard as nails when it comes to negotiations.
她是个女商人，在谈判时非常强硬。
•
Despite her gentle appearance, she's as hard as nails when she needs to be.
尽管她外表温柔，但必要时她会非常强硬。