Noncommuting
非对易的
🗣️ 情景例句
Oh, without a doubt.
啊， 毫无问题。
The proof of the pudding is in the eating.
空谈不如实验。（实践出真知）
Travelling at a height of 30,000 feet, far above the clouds, and at over 500 miles an hour is an exhilarating experience.
腾云驾雾，在30，000 英尺高空以500英里的时速旅行，这种经历令人心旷神怡。