Stoichiometer
[医] 化学计算器, 化学计量器
🗣️ 情景例句
Who has torn these pages out of the book?
谁撕掉书上的这几页？
It's a long story.
说来话长。
It took me over half an hour to get rid of him.
我花了半个多小时才摆脱了他的纠缠。