另一个关于头发的有趣的事实是，它非常结实——事实上和铁一样结实。

Another interesting fact about hair is that it is very strong—as strong as iron in fact.

youdao

从被洪水淹了的船的深处，一些人着实艰难地爬上铁梯来到上层甲板的安全处。

From the flooded depths of the ship, some did manage to claw their way up iron ladders to the safety of the upper deck.

《柯林斯英汉双解大词典》

他是拳坛的铁榔头之一。

He's one of boxing's strongest punchers.

《牛津词典》

Steel is about 10 cents a pound.

铁是10美分一磅。

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