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
Isn't that right?
对不对？
I don't have the nerve to do it.
我没勇气去做。
The lines of the animal had in fact been cut into the rock.
事实上，动物的线条被刻进岩石里。