Only the hills sent a faint echo back.

只有山丘传来的隐约的回声。

These species use echolocation to find their way and identify food.

这类物种利用回声定位来寻找方向和识别食物。

He felt their presence all about the house, pervading the air with the shades and echoes of still vibrant emotions.

空气中弥漫着仍然颤动的感情的阴影和回声。

Like bats, they use echolocation to navigate.

和蝙蝠一样，它们也利用回声定位来导航。

They can also use echolocation to hunt insects at night and map out an area.

他们还可以使用回声定位在夜间捕猎昆虫并绘制区域地图。

And the reverberation results from the vibrations that linger when the tissues pull apart.

而回声则来源于组织分离时产生的振动。

Did you never hear an echo? asked his mother.

“你难道从没听说过回声？”

It's a book that resounds with reality.

这本书的每一页都是冷酷现实的回声。

Letting him hangout inside would have been a " Chiroupterrible" idea even if you got to wing it sometimes in news, some of the most " battle" tested reporters would want to fly to a different " echolocation" .

让他在里面闲逛本来是一个糟糕的想法，即使你有时在新闻中有所表现，一些认为最有“战斗力”的记者会想要飞向另一个“回声定位”。

He told The Northern Echo " It isn't an affluent part of the world, so for them to find cash of that amount and instantly think about taking it to the police stations shows the community spirit there is."

他在接受《北方回声报》采访时表示：“这里不是什么富裕的地方，所以对他们来说，找到这么多现金，并立即想到把它送到警察局，显示了他们的社区精神。”

Crystal Mountain, Washington, Echo Summit, California, Silver Lake, Colorado or Jay Peak, Vermont.

华盛顿的水晶山、加利福尼亚州的回声峰、科罗拉多州的银湖还是佛蒙特州的杰伊峰？

Some assisted technology works using echo-location – a system of ultrasound detection used by bats.

一些辅助技术使用回声定位——蝙蝠使用的一种超声波检测系统。

You can hear your own voice when you shout in the valley.

在山谷里，你大声喊就可以听到自已的回声。

Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.

动物发出的声音不都是用作语言交际。我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。

The bat judges distances by a kind of echo-location.

蝙蝠用一种回声测定法来判断距离。

Yeah, there's a lot of echo in the building actually for some reason.

对，不知道是什么因，大楼里回声非常大。

To produce echoes that more accurately reflect the world.

用这种方法来产生能更精确反应世界的回声。

OCT is a form of optical echolocation.

OCT的理是光学回声定位。

Echoes of that disk live on today, seen in the flatness of the solar system.

这个碟状物的回声甚至遗留到现在，只要看看太阳系的扁平形状就知道了。

Even more amazing, bats navigate by echolocation which basically means they can see using sound.

更令人惊奇的是，蝙蝠是通过回声定位来导航的，这基本上意味着它们可以用声音来看到东西。