Pernutation
[计] 置换
🗣️ 情景例句
I'm the vice-president of new toy development.
我是负责新玩具开发的副总裁。
I invited him to come back, but he wouldn't.
我请他回来，但是他不肯。
I have two cats. One is white, the other is black.
我有两只猫，一只是白猫，另一只是黑猫。