Nilmanifold
[数]幂零流形
🗣️ 情景例句
My family can survive on the produce from our hobby farm.
业余时间我们一家人在小农场的劳动成果足够一家人维持生计了。
Is there any discount for the USA Railpass?
火车通行证有折扣吗？
'I was just wondering how to spend the morning -- until I saw you.
“我正不知道怎么消磨这一上午呢，正好见到好。