Dichloromethylation
双氯甲基取代作用(引入两个氯甲基)
🗣️ 情景例句
I'll give them your regards.
我会向他们转达你的问候。
Life without a friend is death without a witness.
在世无朋友，死后无证人。
Neither was I surprise when the train stopped at Widley, a tiny station a few miles along the line.Even a mighty express train can be held up by signals.
火车开出几英里即在一个小站威德里停了下来。对此，我不觉得奇怪，因为即便是特别快车也可能被信号拦住。