Copper nails are better than iron nails because the iron rusts.
铜钉比铁钉好，因为铁钉会生锈。
We need iron nails of all sizes.
我们需要各种尺寸的铁钉。
Two iron nails were found in the tomb, one on the ground and one actually inside an ossuary, and, according to the film, mysteriously disappeared shortly after.
根据影片，在古墓里发现两颗铁钉，一颗在地上，另一颗钉在尸骨上，然而不久后便神秘消失。
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