They make a loud noise.

它们发出很大的响声。

youdao

To make a loud noise usually because of anger or fear.

因生气或害怕发出大的噪音。

youdao

Home alarms not only make a loud noise to scare robbers away, but also let the police know that someone is trying to break into your house.

家庭警报发出的强烈声响不仅可以将歹徒吓跑，同时警察也可及时得知有人试图闯入你家。

youdao

"I think we have got to pay a wonderful tribute to a man to whom we owe all of this, he is in Johannesburg and if we make a loud enough noise he will hear us and so we say, halala Nelson Mandela."

VOA: standard.2010.06.11

So, why should a non-frightening incongruity cause people to make a distinctive loud noise consisted of staccato segments of one fifteenth of a second each separated by a fifth of a second?

为什么不引起恐惧的不一致性,会让人们发出一种与别不同的声音,而且这种声音是间断的，一节声音持续15分之一秒,两节声音之间也是相隔15分之一秒？

耶鲁公开课 - 心理学导论课程节选