建模导读。

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Animals have many different kinds of bodies and skins.A bird has manys feathers on its body.It has two wings and a beak.

The wings help the bird to fly.

The beak is the hard part of a bird's mouth.

Many animals breathe using lungs.A fish breathes using gills on the side of its body.

All mammals have hair on their bodies.Some animals have fur on their bodies.