Tappets
n. [机] 挺杆；梃杆；[机] 凸轮从动件
🗣️ 情景例句
You hit it.
你说对了。
We don't like them to pass through here.
我们不希望汽车通过这里。
below 20 per cent, its bactericidal action is negligible.
浓度低于20％时，杀菌能力基本上就不存在了。