螺帽已经脱落了.The nut has worked off.把你的扳手拿来, 把螺帽拧紧.Take your spanner, and tighten the nut.这些螺栓和螺帽把轮子固定下为.These bolts and nuts hold the wheels on....

“螺帽”的拼音为：luó mào...

“螺帽”的英语可以翻译为：lind nut，nut，screw cap ...