Celmide
二溴乙烷
🗣️ 情景例句
But Saturday's my birthday.
但星期六是我的生日。
May I speak to Mr. Johnson, please?
我想请约翰先生听电话好吗？
Well, Lucy is wearing blue trousers and a blouse.
恩…，露茜穿着一条蓝裤子和一件衬衫。