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

其他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消耗较少量。

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

鸟翼方的气流在翼尖后方向盘旋，种现象被称作气流洗。