When groups of males get together, their mating call will be impossible to ignore.

当雄性蝉聚集在一起时，它们的求偶叫声将不容忽略。

And that's the sound of the mating call so they can respond to us.

这是交配的声音信号，这样它们就会对我们做出回应。

And in the oceans the full moon's bright light is a mating call for sea creatures all over the world.

在海中，满月明亮的胧光是世界各地海洋生物的求偶讯号。

Because some whales sing as a mating call, the shipping industry's interference with those songs is a concern, said Michael Noad.

迈克尔·诺德说，由于一些鲸鱼唱歌是为了求偶，航运业对这些歌曲的干扰是一个令人担忧的问题。

That's exactly what Feng's team is testing now, by broadcasting mating calls to the females in a laboratory-with the lights out.

这正是阿尔伯特·冯的团队现在正在测试的，他们在实验室里关灯向雌性青蛙出交配信号。

That's the mating call of the Northmen.

那群北方佬在发春呢。

They might be lucky enough to hear the mating call of the grouse next morning.

他们可能足够幸运， 可以在第二天早上听到松鸡的求偶叫声。

It can also help the primate produce a loud, bellowing sound, which can be used  to alert danger, or as a mating call.

它还可以帮助灵长类动物发出响亮的吼叫声，可以用来警告危险，或作为求偶叫声。