lubrication

n. /ˌluːbrɪˈkeɪʃn/ C1

润滑；润滑作用

The action or process of putting oil on moving parts.

仙境例句

The tall clock had stopped for want of lubrication, so one drop of oil set it going again.

那座高高的钟因为缺少润滑停了，滴上一滴油，它就又走起来了。