Dmk
[医][=demethylketene]脱甲基乙烯酮
🗣️ 情景例句
What time do your classes start?
你的课什么时候开始？
I'm looking for a part-time job to help put me through school.
为了使我能够从学校毕业，我正在找兼职工作。
He gets back home at a quarter past five.
15回到家。