Some, like homing pigeons, can be trained to deliver messages and packages.

有些像信鸽样，可以接受培训以传递消息和包裹。

That custom guide RNA molecule is like a homing beacon.

这种自定义向导RNA分子就像个导航信标。

There is an interesting history of using homing pigeons to collect intelligence.

有段使用信鸽收集情报的有趣历史。

For example, you could say, Police are homing in on the suspects.

例如，你可以睡，" 警察很快就要抓到嫌犯了。"

They use their incredible sense of smell like a prehistoric homing device.

它们利用异常出色的嗅觉就像是史前追踪装置。

But one dinosaur in particular uses these scent marks as a homing device.

不过有种恐龙却把这种味当做定位装置。

So, the next time your cellphone crashes, give a salute to your neighborhood homing pigeon.

所以，下次你的手机崩溃时，向你的邻居信鸽致敬。

One of the beautiful things about a homing pigeon, of course, is it will always come back.

当然，信鸽的好处之是它总会回来。

That is also where we get homing pigeons -- pigeons that can find their way home after being released.

这也是我们用到信鸽的地方。信鸽被放出来后可以找回回家的路。

When you use an app involving your location, your phone constantly transmits where you are, like a homing beacon.

当你使用个与你的位置有关的应用程序时，你的手机会不断发送你的位置信息，就像个归航信号样。

Sweeter-tasting fish meant rivers in the offing; groups of birds, homing in the evening, showed him where land lay.

如果鱼的味比平常甜点，就意味着淡水河离这里不远，如果傍晚有鸟群回家，就指示陆地的方向。

I check on the 34 homing pigeons.

我检查了 34 只信鸽。

Tortoises have what's called a homing instinct.

乌龟有所谓的归巢本能。

So the electricity functions as both a stun, and as a homing signal.

因此，电既起到了眩晕的作用，又起到了归巢信号的作用。

Turns out that electric eels are more like electro-locating homing eel-bats with stun guns.

事实证明，电鳗更像是带有电击枪的电子定位归巢鳗蝠。

Today we're homing in on the heaviest bird to set its scaly foot down on planet Earth: the elephant bird.

今天我们要关注的是将其布满鳞片的爪子踩在地球上的最重的鸟: 象鸟。

Scientists took a closer look at the forebrain of homing pigeons and owls and found nerves there that connect horizontally and vertically.

科学家们仔细观察了信鸽和猫头鹰的前脑，发现里面有水平和垂直连接的神经。

A lot of homing pigeons also have what is called magnetite in their beaks and magnetoreceptors in their nervous system or brains.

很多信鸽的喙中也有所谓的磁铁矿，神经系统或大脑中有磁感受器。

The animal also known as a homing pigeon has been used for centuries to quickly and reliably carry information over hundreds of miles.

这种被称为信鸽的动物，数百年来直被用来快速、可靠地传递信息。

He set his face down this toward Madison Square, for the homing instinct survives even when the home is a park bench.

他把脸朝麦迪逊广场，因为即使家是公园的长椅， 归巢的本能仍然存在。