Perhalogeno-
[化] 全卤(代)(代替所有C上的氢)
🗣️ 情景例句
He sounds just like the person we need for the job.
听起来他正是我们所需要的人，适合在这里做事。
How much is the interest a year?
每年利息多少？
But I don't understand.
这我就不明白了。