Commutativity
[计] 可交换性
🗣️ 情景例句
We don't get to see enough of each other.
我们在一起的时间太少了。
Talk back.
你还顶嘴！
Yesterday my husband removed the gate and Rex got so annoyed we have not seen him since.
昨天，我丈夫把门卸了下来，雷克斯很生气，此后我们便再也没有见到它。