You know, there is the passenger pigeon.

例如旅鸽。

Scientists offered new hope for bringing back extinct species like the passenger pigeon.

科学家们对于使像信鸽这样的灭绝物种复活提出了新希望。

Once upon a time there were thousands of beautiful birds called passenger pigeons.

从前，有成千上万的美丽的鸟，叫做旅鸽。

You know, we are working on everything from the woolly mammoth, as some of you may know, to the passenger pigeon.

我们研究很多生物，你们中的一些人可能知道，大到猛犸象，小到旅鸽。

The passenger pigeon, then, is now what we would describe as " extinct" (extinct).

那么，旅鸽现在就是我们所说的“灭绝”（extinct）。

We turn now to our second topic, the passenger pigeon.

我们现在转向第二个话题，旅鸽。

Instead, more recent extinct animals, like the passenger pigeon that lived in the 19th century will be resurrected.

相反， 最近灭绝的动物，比如生活在 19 世纪的旅鸽， 将会复活。

See, the passenger pigeons that scientists are trying to bring back won't be exact copies of the originals.

看吧，科学家们试图带回的旅鸽不会是原鸽的精确复制品。

So, we'd end up with passenger pigeon 2.0 -- not the real thing, but the closest possible.

所以，我们最终得到了旅鸽 2.0——不是真正的东西，但可能是最接近的。

The passenger pigeon was not very big.

旅鸽不是很大。