thirty发音是[_θ__ti]。thirty的音标是[_θ__ti]，其发音可以根据其音标进行拼读，作为名词表示三十年代。相关例句：He was a young man at his early thirties他是个三十岁出头的年轻人。相关例句：I usually do my homework at around five thirty我通常5点半左右写作业。

thirty[英]['θɜ:tɪ] [美][ˈθə:ti]
生词本
简明释义
n.三十；三十个；三十年代；三十的记号
adj.三十的，三十个的
num.三十；三十个
复数：thirties

以下结果由 金山词霸 提供
柯林斯高阶英汉词典 网络释义
1.NUM（数字） 30Thirty is the number 30.

2.N-PLURAL三十多，三十几（指 30 至 39 之间的数字）When you talk about the thirties, you are referring to numbers between 30 and 39. For example, if you are in your thirties, you are aged between 30 and 39. If the temperature is in the thirties, the temperature is between 30 and 39 degrees.

Mozart clearly enjoyed good health throughout his twenties and early thirties.
显然，莫扎特在二十几岁到三十刚出头时，身体非常好。