Rmw
[医]Relative Molecular Weight
🗣️ 情景例句
Do you want a first class, business class or economy seat?
你想要头等舱、商务舱还是经济舱？
I told him to stay till he comes back.
我告诉他留下来等他回来。
Why did you stay at home?
为什么呆在家里？