Impactor
n. 撞击器；悬浮微粒的取样器
🗣️ 情景例句
All right. We'll make close study about it and give you reply as soon as possible.
很好。对这个问题我们将仔细研究一下，尽快给你们答复。
No trouble at all.
一点儿也不麻烦。
What is the minimum we would have to order.
那么我们至少得订多少呢。