thirties

num.三十

I'll be thirty next year. 明年我就满三十岁了。

I get up at six thirty every morning. 我每天早上六点半起床。

There are more than thirty footmen in this hotel. 这家旅馆里有三十多名仆役。

She has served the family faithfully for thirty years. 她为这个家忠心耿耿地操劳了30年。

There were many people with leprosy around the age of thirty. 在三十年代有很多麻疯病人。