People need gear(装备)to play some sports, and to help us stay safe when we play. Animals have some parts that work like our gear, but animals never need to put their gear on-- it's built-in!
Cleats are shoes with plastic or rubber pegs (钉子) on their bottom. The small parts dig into and grip the ground. A cheetah's claws (爪)always stick out a little, so they're always ready to go. The tips of the cheetah's claws dig in and help it run and turn-- just like your cleats! |
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Skis are long and flat. They're made of plastic and metal. Their smooth bottoms move over snow and ice. A penguin can't walk fast. When it needs to travel over snow and ice, it uses its smooth stomach instead. The penguin lies on its stomach and pushes itself forward with its feet. |
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We don't see clearly underwater. Swim goggles keep a pocket of air around our eyes.Then we see through air, just like we do on the land. A dolphin's eyes have a different shape from ours. They see clearly underwater and can make a quick change after lifting their heads. |