For women, the biological clock governs the time for having children.

对于女性，生物钟控制着孕育子女的时间。

Men have a biological clock too.

男人同样有生物钟。

Use sunlight to set your biological clock.

把阳光当作你的生物钟。

Time to Wake Up to the Male Biological Clock?

是时候该注意到男性生物钟啦！

This is a hormone that regulates the biological clock.

褪黑激素是一种调节生物钟的激素。