Gradiomanometer
压差密度计
🗣️ 情景例句
I don't understand. Did you exercise or not?
我搞不懂 ，你到底作了健身操没有？
What do you want to be when you grow on?
当你长大以后，你想做什么？
We can offer a 10% discount for orders over 10000 pieces.
订购一万个以上，我们可以打九折。