在安装家具时，别忘了在螺丝下加个垫圈。

Don't forget to put a ___washer under the screw when assembling the furniture.

我把脏衣服放进洗衣机里清洗。

I put the dirty clothes into the ___washer to clean them.

这台洗衣机是市场上效率最高的型号之一。

This ___washer is one of the most efficient models on the market.