They were made out of animal hair.

它们是由动物毛发制成的。

Of course, you do not really have to put on a shirt made of animal hair.

当然，你不必穿动物毛做的衬衫。

They had to figure out the direction an animal's hair would move, how it clumps, and how it interacts with the world around it.

他们必须弄清楚动物的毛发会往哪个方向移动，如何成团，以及如何与周围的世界互动。

Our goats produce milk for our family, and we use everything from the animal—hair, skin, and dung. Nothing goes to waste!

我们的山羊为我们的家庭生产牛奶，我们使用动物的一切——毛发、皮肤和粪便。什么都不会浪费！

Allergic rhinitis is also called hay fever, and it's typically caused by allergens like hay, as well as pollen, dust, animal hair, or mold spores.

过敏性鼻炎也被称作花粉症，因为它可以被特殊过敏原诱发，如干草、花粉、尘土、动物毛发，或是霉菌孢子。

It's actually a paint brush but it's close to what you would have used at the time so a bundle of animal hair on a wooden handle.

这实际上是一个油漆刷，但它和那时使用的很接近——木柄上有一束动物毛发。

So we can graze our herd far from the water holes, milk for our family and we use everything from the animal hair skin and dung.

所以我们可以在远离水坑的地方放牧，为我们的家人提供牛奶， 我们使用动物毛皮和粪便中的一切。

Airborne allergens like pollen, dust, animal hair, or mold spores cause mast cells in the tissues to release histamine, causing the eyes and nose to become inflamed and watery.

花粉、尘土、动物毛发、霉菌孢子等空气传播的过敏原通过促进组织中的肥大细胞释放组胺，最终导致眼睛和鼻子的炎症和水肿。