Nulhomotopy
[数]零伦
🗣️ 情景例句
Where did you get such a nice tan?
你到哪把皮肤晒成棕色的？
Absolutely impossible!
绝对不可能!
Before she had anchored, the men from the boats had climbed on board and the decks were son covered with colourful rugs from Persia, silks from India, copper coffee pots, and beautiful handmade silverware.
大船还未下锚。小船上的人就纷纷爬上客轮。一会儿工夫，甲板上就摆满了色彩斑斓的波斯地毯。印度丝绸。铜咖啡壶以及手工制作的漂亮的银器。