Infrasizer
超微粒空氣分級(jí)器
??? 情景例句
I don't know.
我不知道。
Sorry, but she is out.
很抱歉，她出去了。
After working with bees for many years, Professor Von Frisch was puzzled by something he had noticed again and again.
在和蜜蜂打了多年的交道后，馮·弗里施教授對(duì)他反復(fù)注意到的事感到迷惑。