“润滑剂”的英语？

“润滑剂”的拼音为：rùn huá jì...

我认为幽默是人生的上好润滑剂。I think humor is a great lubricant for life.绝大多数机械装置都需要用油作为润滑剂。Most mechanical devices require oil as a lubricant.把润滑剂涂在轮子上使它转起来更零活一些。You put lubricant on a wheel to make it turn more easily....