1、thirty的中文意思是30的意思。
2、双语例句：
（1）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。
（2）She thinks nothing of walking thirty miles a day.
她认为一天步行三十英里不足为奇。
（3）Hes described as around thirty years old, six feet tall and of medium build.
他被描述为大约三十岁，身高6英尺，体格中等。
