Stoechiometer
[医] 化学计算器, 化学计量器
🗣️ 情景例句
This may sound like a dumb question, but I'd like to know.
这也许是个愚蠢的问题，但我想知道。
Missing school to watch the football match is out of the question.
为看足球赛而旷课，那可不行。
they are not prepared even to admit the possibility that noise affects people.
甚至不愿承认噪音可能对人有影响。