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 had never been there before.
我以前从来没有去过那里 。
My roommate's having a party.
我的室友安排了一个聚会。
It's the same colour.It's green, too.
一样的颜色， 也是绿的。