Dimethylation
二甲基化作用, 二甲基取代作用
🗣️ 情景例句
I see. Would you like me to reschedule you for another night?
我明白了。要不要另外为你安排别的晚上。
He has a telephone directory.
他有一本电话簿。
Yes, I think we do. Lucy, we need some more hot water. Can you go and get some, please?
是的，再要些吧。露西，我们还要热开水。请你去弄些来，行吗？