例句：

　　Only thirty students graduated in Chinese last year.

　　去年只有三十名學(xué)生獲得漢語(yǔ)學(xué)士學(xué)位。

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

　　他三十歲時(shí)已拿到4萬(wàn)英鎊的年薪了。

　　We are expecting thirty or so people to come.

　　我們預計要來(lái)三十人左右。