Stoichiometer
[医] 化学计算器, 化学计量器
🗣️ 情景例句
Yes. In there. Good luck.
是的 ，在那里面。祝你好运。
Each bird likes to hear himself sing.
每一只鸟都爱听自己歌唱。
There was no doubt that we were unwelcome visitors.
毫无疑问，我们的来访是不受欢迎的。