Collagen fiber is one kind of animal fiber.

胶原纤维是一种动物纤维。

youdao

Destroying one kind of animal can create many problems.

毁灭一种动物会产生很多问题。

youdao

However, shooting one kind of animal so that hunters can shoot another worries a lot of biologists and greens.

可是，猎人们既然捕杀一种动物就会接着杀另一种，这种想法令许多生物学家和绿色环保主义者很是担忧。

youdao

And when it come to jumping, he could get over more ground in one jump than any animal of his kind that you ever saw.

VOA: special.2009.08.29