Totient
欧拉φ函数
🗣️ 情景例句
You can see many posters that are put up before the movie opens.
每部电影首映前你都会看到铺天盖地的海报。
Victory belongs to the m ost persevering.
胜利属于最坚强不屈的人。
Sure! You're welcome!
当然！欢迎你！