Stoechiometer
[医] 化学计算器, 化学计量器
🗣️ 情景例句
I'd love to come. But I have to be on duty this weekend night.
我是想过来，但我周末晚上得值班。
It's going to crash! Why?
要下坠了，究竟怎么啦？
Hi, Sam.We're having lunch.
你好，萨姆。我们正在吃午饭，