air horn

基本解釋

We use this air horn to give a signal in the event of emergency.
應(yīng)急情況下，用這個(gè)氣喇叭發(fā)信號(hào)。
club.sol.com.cn
The fighting starts when a signal such as an air horn or whistle blows, and can last anywhere from a few minutes to a few hours.
儅用號(hào)角或口哨發(fā)出信號(hào)時(shí)，大戰(zhàn)就可以開(kāi)始了，在任何位置都行，能持續(xù)幾分鍾到幾個(gè)小時(shí)。
Second most harmful to our ears was the air horn, which exposes our ears to damage inducing levels of 123.6 decibels. This was followed by the drum, which reached 122 decibels.
對(duì)我們的耳朵造成傷害排名第二的就是氣喇叭，它能發(fā)出123.6分貝的聲音，緊跟其後的就是桑巴鼓，達(dá)到122分貝。

The horn obviously is a brass instrument and what makes the sound is a vibrating column of air.
顯而易見(jiàn)的,圓號(hào)是個(gè)銅琯樂(lè)器,它通過(guò)震動(dòng)空氣柱來(lái)發(fā)出聲音
耶魯公開(kāi)課 - 聆聽(tīng)音樂(lè)課程節(jié)選

Or how the horn honks automatically when filling the tires to tell when the air pressure is right.
FORBES: Test Drive: 2013 Nissan Altima
But once or twice in every song, he would put his horn to his lips, stand ramrod straight, and play sweet, fast notes that danced in the air.
FORBES: Jazz, Schizophrenia And Side Effects