Tappet
n. 梃杆, 凸轮从动件\\n[机] 挺杆
📖 牛津释义
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 挺杆.
🗣️ 情景例句
I need to confirm my reservation.
我要确认我的预定。
Have you taken a bus?
你坐过汽车吗？
That's OK.
可以。