Lemniscate
n. [数]双纽线
🗣️ 情景例句
That's it--show.
就是它 ，show。 ?
While you were writing letters,I was reading a book.
当你正在写信时，我正在读一本书。
The development of such a telescope will be one of the great astronomical projects of the twenty-first century.
而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。