Rfms
[化] 射频质谱仪
🗣️ 情景例句
Well, that's what fathers are for.
嗯，父亲们的用处正在于此。
It's a beautiful country with many large lakes.
它是一个有许多大湖的美丽的国家。
No, I don't think we have been.
不，我想没有。