Saltmeter
盐水(比重)计
🗣️ 情景例句
I have many hobbies. I like almost all kinds of sports and I also like classical music.
我有很多爱好，喜欢各种运动，也喜欢古典音乐。
I'm happy when I skate.
溜冰真是快乐呀。
he identifies himself with its centre of gravity, its mass, its weight;
他把自身和物体重心、质量、重量融为一体。