Totient
欧拉φ函数
🗣️ 情景例句
We'd all like to believe that we have a bright future ahead of us.
我们都愿意相信我们的前面是一个美好的不未来。
Not at all.
没什么。
Antique shops exert a peculiar fascination on a great many people.
古玩店对许多人来说有一种特殊的魅力。