It's why we can't hear dog whistles.

所以我们听不见狗哨声。

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

“人们在很久以前就注意到这些鸟类可以发出响亮的口哨声。”

The call collection, published in the journal PeerJ, has only a few whistles.

这个声音集发表在《PeerJ》期刊上，只有小部分声音是哨音。

He doesn't listen to my new shiny whistle anymore.

他不再听我新口哨的指挥了。

Blow the whistle, blow the whistle!

吹哨投降，吹哨！

And Frank, taking a willow whistle out of his pocket, blew a long note.

于是，弗兰克从他的口袋里拿出来一个柳木哨子，吹出了一串长音。

They brought whistles and rattles with them.

他们会随身带着哨子和拨浪鼓。

Armour plating, all the bells and whistles.

装甲钢板，还有好多小玩意儿。

Just then a man gave a loud whistle.

小男孩话音刚落响起了一声男人的口哨。

Toot! Toot! Nick happily blew the train whistle.

嘟嘟！尼克兴奋地拉响了汽笛。

'I suppose that you could not possibly whistle, yourself, in your sleep? '

'我想你睡着的时候，不可能吹口哨吧？'

You created adam Peer as a way to blow the whistle anonymously.

你编造了亚当·皮尔这个人来当匿名举报者。

Blow your whistle and let the game begin, Charley.

吹哨让比赛开始吧，查理。

Angel Vargas was trying to teach us how to whistle.

安琪·法加斯正在教我们怎么吹口哨。

Madam Hooch placed her whistle in her mouth and blew.

霍琦夫人把哨子塞进嘴里用力一吹。

Every few hours I hear the whistle of the train.

每隔几个小时我就听到火车的汽笛声。

" Come. Bring the whistle. Now we shall make the tree."

“来吧，带上口哨，现在我们来种树。”

Where the farmer works, he lives, and loves, and whistles.

农夫们下地干活，它在田间地头栖息、爱恋、玩耍。

Wolf Larsen pursed his lips in a long, quizzical whistle.

海狼拉尔森嘬起嘴唇吹了一声长长的疑问的口哨。

Test sirens and whistles and report.

测试声号并报告。