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| Mammals(4) Flying Mammals | |
| 摘 要： | Bats are the only mammals that can fly.They are warm-blooded,furry animals that suckle their young.Bats are flying mammals,but they do not have feathers like birds.They have wings of skin that stretch from their fingers to their feet.Many bats eat insects which they hunt at night.These bats make sounds that bounce off objects.Bats use the echoes |
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