这些螺母和螺栓把轮子固定住了。

These nuts and bolts hold the wheels on.

《牛津词典》

您是否曾经用过锤子和螺丝刀从螺栓上拧下螺母？

Have you ever used a hammer and screwdriver to loosen a nut from a bolt?

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中国是世界上最大的螺丝钉、螺母、螺栓和垫圈生产商，而欧盟是这些商品的最大市场。

China is the world's biggest producer of screws, nuts, bolts and washers, while the EU is its biggest market.

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