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趣谈英语:猫头鹰飞行的时候没有声音-Owls Fly Silently

所属教程:趣谈英语

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2016年07月09日

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https://online2.tingclass.net/lesson/shi0529/0009/9833/7.mp3
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Pre-Listening Vocabulary

turbulence: the movement of air

bird of prey: a bird that hunts and eats animals

flap: to make an up and down movement

sneak up on: to approach someone or something in a secretive way

velvety: soft like velvet

drawback: a negative aspect

Owls Fly Silently

Most birds make noise when they fly. They create turbulence as their wings touch the air. Owls, however, fly silently. These birds of prey have wide wings and small bodies. They don’t need to flap very much. An owl’s velvety feathers also contribute to the silence. The air passes easily through their soft wings without creating a sound. Silent flight allows owls to sneak up on their prey. Velvety feathers do have one drawback. They aren’t waterproof7. In a rainstorm, owls have difficulty staying warm and finding food to eat.

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