纳米结构不能破坏真正的衣服，因为棉花和其他衣服的材料太结实了，无法破坏。
The nanostructures don't break down the actual clothing because cotton and the other clothing materials are too strong to be broken down.
过程如此罗嗦麻烦是因为碳纤维结构部件比钢结构结实，而且轻一半。
The reason for this rigmarol is that carbon-fibre body parts are stronger than steel but weigh half as much.
这座桥的木质结构，很不结实。
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