Tappet
n. 梃桿, 凸輪從動件\\n[機] 挺桿
?? 牛津釋義
tappet
n
projection in a piece of machinery that causes a certain movement by tapping against sth, used eg to open and close a valve 挺桿.
??? 情景例句
I love being with them.
我喜歡和他們在一起。
The fox changes his skin but not his habit.
狐貍可以改變皮毛，但不能改變習性。
Hi, Sam! How are you today?
嗨，山姆！你今天好嗎？