Pyknometer
[医] 比重瓶
🏥 医学释义
①比重瓶 ②比重计
🗣️ 情景例句
It's seventy-five cents for adults and thirty cents for children under twelve.
大人75美分，12岁以下的小孩30分。
It was a terrible experience,and I won't forget it.
它是可怕的经验，我不会忘记它。
Sure! We picked lots of apples.
当然记得了！我们摘了很多苹果。