Nilpotency
幂零性
🗣️ 情景例句
Stopping by Woods on a Snowy Evening
雪夜林边小驻足
It is harder to marry a daughter well than to bring her up well.
养女容易嫁女难。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。