Natalite
乙醇乙醚混合物
🗣️ 情景例句
No, that's OK.
不，没关系。
Oh well, you'll just have to remember their names.
好吧，你们只好记住他们的名字了。
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。