Perhalogeno-
[化] 全卤(代)(代替所有C上的氢)
🗣️ 情景例句
Remember to lock your door and windows when you leave the house.
出门前记得锁好门窗。
It seems doesn't understand.
看起来他好像不了解。
My parents want me to go abroad.
我父母想让我出国。