Noncommutable
不可互换[易]的
🗣️ 情景例句
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
We've gone over quite a lot. Shall we take a break?
我们已进行很久了，让我们休息一下好吗？
Whose sweaters are these?
这些都是谁的毛衣？