三十的英文是什么意思

　　Only thirty students graduated in Chinese last year.

　　去年只有三十名学生获得汉语学士学位。

　　At thirty years old, he was already earning 40 000 a year.

　　他三十岁时已拿到4万英镑的年薪了。

　　We are expecting thirty or so people to come.

　　我们预计要来三十人左右。

　　She thinks nothing of walking thirty miles a day.

　　她认为一天步行三十英里不足为奇。

　　It's two thirty.

　　现在是两点三十。