Cascade impactor
[化] 阶式碰撞取样器
🧩 词语组成解析
n. 撞击器；悬浮微粒的取样器
🗣️ 情景例句
Oh, Grandpa will be so pleased that you're wearing them.
噢 ，戴了它， 祖父一定会非常高兴。
It takes courage to do so.
这样做需要勇气。
The guest who arrives half an hour too soon is the greatest nuisance.
客人提前半小时到达是令人讨厌的。