grease /ɡri:s/ I. n. ［u］油脂，润滑脂：remove grease from one’s coat 除去衣服上的油污 ‖II. vt. 用油脂涂，给…加润滑油：You should grease the machine once a week. 你应该每周给机器润滑一次。


greasy adj.油腻的：［考句］If you work under a car when repairing it, you often get very greasy. 如果你在车下面修车，经常会弄的满身油污。