Dimethylated
二甲基化的
🗣️ 情景例句
If you find it unworkable, we have no other choice but to call the deal off.
如果不行的话，我们只好放弃了。
How much is it to rent an economy car?
租一辆经济车要多少钱？
How long has Jim been at his school?
吉姆到校有多长时间了？