Propynal
丙炔醛
🗣️ 情景例句
All the employees in the office eat fast food for lunch.
办公室里的职员中午都是吃快餐的。
I hope you can pass the examinations.
我希望你的考试能通过。
Has your company done any research in this field?
请问贵公司对此范畴做了任何研究吗？