as hard as nails meaning in Chinese

(结实的象铁打的
身体结实, 冷酷无情

Those men are as hard as nails .
那些人身体很结实。
After a summer of work in the country , i was as hard as nails , hard as nails , without a pound of extra weight
在乡长下劳动一个暑假之后，我的身体十分强壮而体重并没有增加。
He won ' t do you any harm . my stepmother might . she ' s ignorant , but she ' s as hard as nails
他一点也不会伤害你，但我的继母却可能会害你。她愚昧无知，但心肠却像铁石，而且很狡诈。
Although he seemed thin and undersized compared with his cousins , he was really as hard as nails and didn ' t fall ill half as often as they did
和堂兄弟们相比，他看上去好像又瘦又矮小，实际上他身体好像又瘦又矮小，实际上他身体非常强壮，生病的次数比他们少多了。
They offered me a good job at that company but i hear that the boss is as hard as nails : one little mistake and you ' re out on the street the next day looking for a new job
他说：他们向我提供那家公司的一个很好的职位，但是我听说他们的老板是个毫无情义的人；只要你犯一个小错，他就马上把你一脚踢出公司大门，让你另谋生路。