And then he heard the whistle blow.

接着他听见外面传口哨声。

You might be able to hear whistling from in the forest.

你或许能听林子里面有口哨声。

Previous work suggests the caterpillars whistle when pecked at by birds.

此前研发现，毛虫在被鸟儿啄食时会发出口哨声。

The bells and whistles don't matter. It's the vote that matters and keeping it true.

钟声和口哨声不重要。选票才重要，要确保其真实。

Lindsay then played the caterpillar whistle through a speaker near a bird feeder.

林赛把扩音器放在喂鸟器附近，然后播放毛虫口哨声。

Her name translates to " clear-voiced" and " whistling."

名字译过“声音清晰”和“口哨声”。

I knew Uncle George was around when I heard that tuneless whistle of his.

一听到乔治叔叔那不成调口哨声，我知道他了。

Is it a high frequency whistle? No, it's more of a relentless, narcissistic drone.

一种高频口哨声吗？不，一种时刻不停自以为唠叨。

The next morning, when the room was very quiet, a loud whistle was heard!

第二天早晨，在教室里很安静时，突然传一声很响口哨声！

If you hear bells, whistles, horns, sirens, or buzzes, look at me.

如果你听到铃声、口哨声、喇叭声、警笛声或嗡嗡声，看着我。

The reason? It's got whistling in it. So you'll sound better.

为什么推荐这首歌？因为这首歌里有口哨声，使你声音听起更好听。

People had long noticed that these birds produced these loud whistles.

“人们在很久以前注意到这些鸟类可以发出响亮口哨声。”

They use their clicks, chirps and whistles to navigate, communicate and to catch their next meal.

它们通过发出咔哒声、啾啾声和口哨声进行导航、交流和捕食。

My supervisor Rob Magrath in collaboration with May Hingee thought that they were used as an alarm.

“我导师罗布·麦葛雷斯及合作者梅·辛吉认为，鸟类将这种口哨声用作警报。

When the scientists played unfamiliar signature whistles for each dolphin, the test subjects quickly grew bored.

当科学家们播放每只海豚都不熟悉标志性口哨声时，测试对象很快便感到厌倦。

As a recent 60-Second Science podcast explained, dolphins have signature whistles that may serve as individual names.

根据最近“60秒科学”一篇播客解释，海豚用标志性口哨声作为自己姓名。

'Because during the last few nights I have always, about three in the morning, heard a low, clear whistle.

'因为这几天深夜，大约清晨三点钟左右，我总听到轻轻清晰口哨声。

People use whistling sounds in place of words.

人们用口哨声代替文字。

There was a chorus of whistles and cat-calls.

口哨声和猫叫声齐鸣。

The bells and whistles are the best part!

布伦达：钟声和口哨声最好部分！