Epimeric
差向异构体的
🗣️ 情景例句
in the past few weeks.
在最近几个星期。
I woke up early and got up at 6 o'clock.
我早醒来并且在6点钟起床了。
Thank you very much. It was nice to meet you.
非常感谢。见到你真高兴。