Polyhalogenation
多卤化反应
🗣️ 情景例句
I can see well both day and night.
我白天晚上都能看得很清楚。
He knocks boldly at the door who brings good news.
彼叩门声响，必来报佳音。
We mustn't waste any more time.
咱们不要再浪费时间了。