Commutativity
[计] 可交换性
🗣️ 情景例句
I'll be here when he calls back. Much appreciated.
他打电话时我会在这，太感谢你了！
You use the front door and I'll hit the back.
你从正门进去，我袭击后面。
You must weigh it carefully.
你必须仔细地称一称重量。