Allochem
異化粒; 外源化學沉積
??? 情景例句
How much for a haircut?
理發多少錢？
Do I need a reservation for the dining car?
我需要預訂餐車嗎？
Our climate is not very good,but it's certainly interesting.
雖然我們國家的氣候并不很好，但又確實很有意思。