hard as nails
英
美
- as adv.同样地；例如；被认为prep.作为；如同conj.因为；像；当...之时；像...一样；结果；尽管n.阿斯（古罗马重量单位，约373克；古罗马铜币名）
- hard adj.硬的；困难的；棘手的；坚强的；残酷的；用力的；液态的；严寒的；确凿的adv.努力地；强烈地；严重地；坚定地
- nails n.指甲名词nail的复数形式.
- They are merciless, with hearts as hard as nails.
他们冷酷无情，铁石心肠。
- Mrs. Macbeth has a heart as hard as flint.
麦克白夫人生来一副铁石心肠。
- They are merciless, with hearts as hard as nails.
他们冷酷无情，铁石心肠。
- He is as hard as flint where business is concerned.
他在生意上是冷酷无情的。
