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

其他经历上洗流的受到变弱的阻力，样在推动自身向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.

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。