He is twenty-four years old this year.

他今年二十四岁。

This book has twenty-four chapters.

这本书有二十四章。

There are twenty-four students in our class.

我们班有二十四个学生。

Grain Buds is one of the twenty-four solar terms.

小满是二十四节气之一。

Beginning of Winter is one of the twenty-four solar terms.

立冬是二十四节气之一。

She has twenty-four hours to complete the project.

她有二十四小时来完成这个项目。

We need twenty-four hours to complete this project.

我们需要二十四小时来完成这个项目。

The twenty-four solar terms are part of traditional Chinese culture.

二十四节气是中国传统文化的一部分。

White Dew is the fifteenth solar term in the twenty-four solar terms.

白露是二十四节气中的第十五个节气。

The Beginning of Spring is one of the traditional twenty-four solar terms in China.

立春是中国传统的二十四节气之一。