And number three, courtship behavior, we use body language.

第三点，求爱行为，我使用肢体语言。

So researchers returned to the site a year later in hopes of learning more about the elusive bats' courtship behaviors.

因此，一年后，研究人员又回到了这个地点，希望能更多地了解这种难以捉摸的蝙蝠的求偶行为。

These are courtship behaviors, and a lot of animals have them.

这些是求偶行为， 很多动物都有。