Studying female birdsong is no simple task.

研究雌性鸟鸣并不是简单的工作。

He mistook the cockcrow for birdsong.

他把鸡啼错当鸟鸣了。

But what about the chirrups and whistles of birdsong or other nature sounds?

但是鸟鸣声或其他自然的声音呢？

It may not be the most melodious bit of birdsong you'll ever encounter.

（山雀的警报信号）可能不是你听过的最悦耳的鸟鸣声。

I hear, I don't know, birdsong. I hear birdsong, oh so lovely.

我听到，我不知道，鸟鸣。我听到鸟鸣，哦，太可爱了。

And then, you get things like random variation on a theme such as birdsong.

然后，你会得到诸如鸟鸣等主题的随机变化之类的东西。

30(B )I listened to the birdsong... and the next thing l knew it was 11a.

30(B )我听到了鸟鸣… … 接下来我知道是上午 11 点了。

In lockdown, cities from Rio to Barcelona were transformed as wildlife and birdsong replaced the noise of taxi horns and traffic.

在封锁期间，从里约热内卢到巴塞罗那的城市都发生了变化，野生动物和鸟鸣声取代了出租车喇叭声和交通噪音。

For example, sound therapy uses noises like rain, birdsong, or music to mask tinnitus and reduce stress.

例如，声音疗法使用雨声、鸟鸣声或音乐等噪音来掩盖耳鸣并减轻压力。

There were hints of something floral and welcoming in the air, birdsong the gentle backdrop to the day.

空气中弥漫着花香和温馨的气息，鸟儿的歌声是这一天柔和的背景。