Totient
欧拉φ函数
🗣️ 情景例句
I keep in touch with my family regularly.
我定期和家里保持联系。
Gentlemen! Can't you agree on anything?
先生们，可否赞成一项？
Mr Shute was a farm worker, and he didn't have much money.
舒特先生是个农场工人，他挣不到很多钱。