1.
- 潤滑油,滑油粘稠的油或粘性物質,尤指用作潤滑油的
A thick oil or viscous substance, especially when used as a lubricant.
- 為了減少摩擦,機器的可動部件常常塗上潤滑油。
In order to reduce friction, the moving parts of a machine are often oiled.
- 你再不加些潤滑油,發動機就要卡住了。
Your engine will seize up if you don't put some more oil in.