Polyhalide
多卤化物
🗣️ 情景例句
It was an extremely difficult and dangerous task.
这是一项极度困难的危险的工作。
How late are you open?
你们营业到多晚？
No. She's wearing green trousers, and a yellow sweater.
不。她穿绿色裤子，黄色毛衣。