Stoichiometer
[医] 化学计算器, 化学计量器
🗣️ 情景例句
I want a package deal including airfare and hotel.
我需要一个成套服务，包括机票和住宿。
I need the change for the stamp machine.
我需要投入自动售邮票机的零钱。
Great! Could you bring it to school tomorrow?
好极了！你明天能把它带到学校来吗？