Of easy wind and downy flake.

掠过和细雪纷飞。

And as cosy as it is downy.

好像绒毛，蓬松又惬意。

So, these like downy little soft feathers on their neck, you know, that's their baby feathers.

你看，它们脖子上柔软的羽毛就是幼毛。

Let us get one of those white downy balls and see whether we can find out the cause of this change.

我们摘下一朵这样的白色绒球, 看看能不能解开这种变化背后的成因。

He got lots of birds, downy woodpeckers, northern cardinals, mourning doves, house sparrows and many others, and watching them was a learning experience.

他饲养过多鸟，绒啄木鸟、北美主红、哀鸠、麻雀等等，并且把观察它们当成一种学习经历。

It was soft and downy. Unlike its parents, it was gray. Its feet and legs were the color of mustard. Its eyes were bright.

那是个软绵绵毛茸茸的小东西。它是灰色的，和它的父母不同。它的腿和脚是芥末色的。它的眼。

Their downy feathers do them a disservice during heat waves too, since they can't go for a swim to cool off until their waterproof feathers grow in.

热浪袭来的时候这些绒毛对它们也同样有伤害，因为在防水的羽毛长出来前，它们还不能通过游泳在水中降温。

How all these creatures survived those conditions was, Dr Druckenmiller suggests, a consequence of dinosaurs' warmbloodedness and the downy feathers many of them are now known to have sported.

德鲁肯米勒博士认为，所有这些生物之所以能在这样的环境中生存下来，是因为恐龙是温血动物，而且现在我们知道，恐龙中有许多都长有蓬松的羽毛。