Molting is the replacement of their old feathers with new ones.

蜕皮是用新羽毛替换旧羽毛。

Some societies even used feathers or shells.

有些社会甚至使用过羽毛或贝壳。

Who do you usually play badminton with?

你通常和谁一起打羽毛球？

Then came " Featheries, " made from leather filled with...feathers.

然后是“羽毛的”，有羽毛填充的皮革制成。

Here's Emma playing Hermione levitating a feather.

Emma扮演赫敏练习漂浮咒，让一根羽毛飘了起来。

Badminton is not easy to play.

羽毛球好打。

So, we understand how feathers evolved, but how do we know that dinosaurs had them?

所以，我们知道羽毛是如何进化的，但我们怎么知道恐龙有羽毛？

When did you start playing badminton?

你从什么时候开始打羽毛球的？

The one in the feather boa, that's Dr. Francis.

围羽毛围巾的是法博土。

So its feathers can't keep it warm.

所以牠的羽毛能替牠保暖。

New feathers grow through underneath to push out the old and there is lots of them.

新的羽毛从下面长出来，将许多旧羽毛推出去。

Their heads are crowned by thin, yellow feathers.

它们的头上戴着薄薄的黄色羽毛。

We've got a quill on the desk.

这里有桌上的羽毛笔。

The more flamboyant the display, the more likely a bird will get noticed.

鸟儿羽毛的色彩越艳丽，就越容易被注意。

Most feathers contain just one or two dye-like pigments.

多数羽毛只有一两种类似染料的色素。

Harder still, how do you preen your body feathers?

更麻烦的是要如何整理羽毛？

The youngsters' feathers are brown in color.

那些幼鸟的羽毛是棕色的。

This is where you get your quills and your ink.

这儿可以买到羽毛笔和墨水。

There are species where birds rub feathers on each other...

还有些鸟类会互相摩擦羽毛。

And even my feathers would rot in the soil.

连羽毛也腐烂在土地里面。