Fractometer
[化]色层分离仪
🗣️ 情景例句
We will help your children in learning lessons in their free time.
我们可以帮助您的孩子在他们空闲时学习功课。
In college I majored in science.What was your major?
在学院我主修了自然科学，你主修了什么？
It is clear that the cat has eaten it!
很明显，是猫偷吃的！