Your first tonal sequence should be simple: two low tones with 0.5 seconds between them for a "beep beep."

第一个音调序列应当很简单：两声低音哔哔，间隔为0.5秒。

youdao

This is why XML and BEEP fit so well together: as BEEP takes care of protocol infrastructure, XML takes care of data structuring.

这就是为什么XML和BEEP一起配合得这么好的原因：因为BEEP负责协议的基础设施，XML负责数据的结构组织。

youdao

BEEP stands for Blocks Extensible Exchange Protocol, an expansion which makes almost as little sense as just saying BEEP, and frankly is far less entertaining.

BEEP代表Blocks Extensible Exchange Protocol(块可扩展交换协议)，这样的全称和只说BEEP一样没有意义，坦白地说更没有趣味。

youdao

With every pulse, the altimeter gave a loud beep, and then a fainter beep as the echo returned.

NPR: Excerpt: 'Skybreaker'

"When Sputnik hit, and all the fear, people going underground and fallout shelters, kind of the end of the world mixed with the beep, beep, beep of the satellite, it touched off American pop culture at its best, " Hoffman says.

NPR: Sputnik in Space and Song

So leave a message at the beep and baby, they'll call you back one more time.

NPR: Annoying Mother's Day Music