Polychlorohydrocarbon
多氯代烃
🗣️ 情景例句
Haven't I seen you before?
我以前没见过你吗？
You can go whenever you wish.
无论何时你希望去你就能去。
Oh yes! I know she quite often eats chicken at home.
噢，对了！我知道她在家里常吃鸡肉。