Wishbones today only exist in birds, yet virtually every one of the most ferocious carnivorous dinosaurs had one.

现今，叉只存在于鸟类之中，然而所有凶残的肉食龙也都具有叉。

And there's one final clue... A clue that all but definitively connects birds and dinosaurs, and it's something you'd least expect... Something scientists call the furcula. Or wishbone.

还有一个终极线索...能够充分证明鸟类爪龙的联系，这也是最让人感到意外的...科学家称之为叉突。是叉。

You don't eat it. It's a toy, like a wishbone.

你不吃它, 它是一个玩具, 就像一个叉。

And the one bone that is the biggest clue of Theropod dinosaurs is something that you've probably played a little game with after your thanksgiving dinner: The wishbone!

S: 而作为兽脚亚目龙最大线索的一块头, 是您在感恩节晚餐后可能玩过的小游戏: 叉!

Species like Archaeopteryx had dinosaur-like teeth and bony tails, along with avian qualities like  wings, feathers, and wishbones.

始祖鸟等物种拥有类似龙的牙质尾巴，同时还具有翅膀、羽毛叉等鸟类的特征。

Wishbones have only been found in birds and Theropod dinosaurs, like Allosaurus, and they draw a clear line from those extinct creatures to our modern feathered friends.

叉只在鸟类异特龙等兽脚类龙中发现, 它们从这些已灭绝的生物到我们现代的羽毛朋友之间划清了界限。

It had some distinctly bird-like traits, like a wishbone, wings, and flight feathers, and it could probably fly at least a little.

它有一些明显的鸟类特征，比如叉、翅膀飞羽，它可能至少会飞一点。

I think it's time to dissect a wishbone.

我想是时候剖析一下叉了。

A wishbone, or " furcula" , is actually a bird's collarbones, but instead of two separate collarbones like we have, theirs is fused into one.

叉" furcula" 实际上是鸟的锁, 但不是像我们一样有两个独立的锁, 而是融合为一体。

Besides helping all their dreams come true, the furcula is actually support for the flight muscles.

除了帮助他们实现所有梦想之外，叉实际上还为飞行肌肉提供了支撑。