Lemniscate
n. [数]双纽线
🗣️ 情景例句
You can't do that! it's against the rules.
你不能那么做！ 那是违反规定的。
Not only did I forget my train ticket, but I also forgot my passport.
我不仅忘了带火车票，还忘了带护照。
That depends.
看情况。