你知道今晚的月龄是多少吗？

Do you know the age of the moon tonight?

八月十五的月亮特别圆。

The moon is especially round on August 15th.

月亮每个月经历不同的循环。

The moon goes through different cycles every month.

月亮在一个月中有不同的阶段。

The moon has different phases throughout the month.

月亮每个月都会经历不同的阶段。

The moon goes through different phases each month.