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考研阅型真

Other birds flying in the upwash experience reduced drag, and spend less energy propelling themselves.

其他经上洗流的飞鸟会受到变弱的阻力,样在推动自身向前飞行的过程中能够消耗较少能

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考研阅型真

The air flowing over a bird's wings curls upwards behind the wingtips, a phenomenon known as upwash.

鸟翼上方的气流在翼尖后方向上盘旋,种现象被称作气流上洗。

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