Other birds flying in the upwash experience reduced drag, and spend less energy propelling themselves.
其他经历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量。
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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