Eratosthenian
爱拉托辛纪(系)
🗣️ 情景例句
Have you ever been to Nanjing?
你曾去过南京吗？
I hope my visit does not cause you too much trouble.
我希望这次来参观没有给你们增添太多的麻烦。
The letter x stands for an unknown number.
字母x代表未知数。