Leptynol
氢氧化钯悬浮液
🗣️ 情景例句
I'm just being a grandfather.
我只是在尽一个爷爷的本份而已。
How much is the admisssion fee?
入场费要多少钱？
At first I thought I'd done the right thing, but I soon realized that I'd made a mistake.
开始我以为我做对了，但是很快就发现自己犯了个错误。