Dmk
[医][=demethylketene]脱甲基乙烯酮
🗣️ 情景例句
Of course, I'll visit at least once a year, maybe more.
当然，我最少每年会来拜访一次，也许更多次。
What is the total circulation of this newspaper.
这家报纸总发行量多少？
I'm OK.
我还可以。