Commutativity
[计] 可交换性
🗣️ 情景例句
Can I set it up now?
现在可以预约吗？
When did you ener the school?
你什么时候入学的？
My parents were visiting relatives, and my grandparents had decided to spend the day at home.
我父母走亲戚去了，祖父母打算那天在家呆着。