Commutativity
[计] 可交换性
🗣️ 情景例句
I've read your application materials with interest.
我很有兴趣地看了你的申请材料。
He insisted that we all be in his office at one o'clock.
他要求大家一点钟到他的办公室。[大学英语四级]
He can get up for about two hours each day, but you must keep the room warm.
他每天可以起来两个小时，但您必须保持房间温暖。