The bat emits these ultrasonic pulses, very high pitch sound waves that we cannot hear.

蝙蝠会发出我们听不到的非常高的超声波脉冲。

youdao

Even a simple note on my guitar has an array of harmonic frequencies. But the frequencies have a special harmonic relationship, which is why you hear it as a single sound with a single pitch.

即使是一把吉他上一个简单的音节都有一系列的谐振频率，而这一系列的谐振频率都有着特殊的谐振关系，这也正是为什么我们听到的只是某一音调上的一个单音。

youdao

The vexing question is: Why? Bats are the only mammal with a better ability to hear changes in pitch than humans do.

但是，有一个令人苦恼的问题是：为什么蝙蝠是唯一的比人类具有更好听力能力的哺乳动物？

youdao

When an instrument--any instrument--the piano, plays a note what you hear is one fundamental pitch.

当任何乐器,比如钢琴,弹出一个音符时,你听到一个的是一个基本音高

耶鲁公开课 - 聆听音乐课程节选

Investors may be willing to sit down with crocodiles and hear their pitch, but they are often not eager to invest afterwards.

ECONOMIST: Hedge funds in Asia

Then we'll hear the pitch: Upgrade or lack Trustworthiness.

FORBES: Can You Trust Your Computer?

On the Republican side, you show up, you meet your neighbors, you hear a pitch for each of the candidates, you can nominate your neighbors if you want, nominate your own favorites.

NPR: Nevada Caucuses, S.C. Votes