汉语意思是三十、三十个,例如:
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.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。
三十
复数:thirties
序数词:thirtieth
例句:
They offered him an extra thirty-five cents an hour.
他们给他每小时另加了35美分。