Dimethylation
二甲基化作用, 二甲基取代作用
🗣️ 情景例句
My brother is a junk food addict.
我兄弟就爱吃垃圾食品。
We think your Chunlan brand air conditioners will be selling well at this end and we are looking forward to receiving your samples soon.
我们认为你方的春兰牌空调机在这里会很畅销，希望很快收到你们的样品。
And he promptly handed the sheet of paper to the gaoler.
说完，他一下子把信递给狱卒。