Stoichiometer
[医] 化学计算器, 化学计量器
🗣️ 情景例句
Is unwilling to start at the bottom, expects too much too soon.
不愿从基层干起，要求太多。
What will you do to help protect our environment from being seriously polluted?
你将为帮助保护我们的环境免遭到污染做些什么呢？
I ought to go home. I have to cook supper for my grandmother.
我该回家了。我得给奶奶做晚饭。