Dimethylation
二甲基化作用, 二甲基取代作用
🗣️ 情景例句
Was it serious?
病得很重吗？
He has more power in many ways than the President.
在许多方面他的权力比我总统还大。
Computers have become smaller and smaller, more and more powerful and cheaper and cheaper.
计算机已经变得体积越来越小，功能越来越多，价格越来越低，