Polyhalogenation

多卤化反应

🗣️ 情景例句

Please forgive me, Susan, but...
请原谅我 ,Susan, 但……
I buy some food on my way home.
我回家路上买些吃的。
That's a nice car. How long have you had it?
好漂亮的汽车。你买多久了?
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