Nilmanifold
[数]幂零流形
🗣️ 情景例句
We have a live-in doctor if there's a problem I can't handle.
假如我遇到不能解决的问题 ，我们还有位驻家医生。
Gordon was not upset by his failure.
哥顿对他的失误既不惊讶也不生气。
You did a great job.
你做得真棒！