Presheaf
预层
🗣️ 情景例句
It's the biggest company in the country.
它是全国最大的。
Why don't you like me?
你为什么不喜欢我呢？
This was followed, at the end of the 1970s, by a machine called an Apple.
70年代末，在牛郎星之后又出现了一种被称为“苹果”的机型。