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

其他经历上洗流飞鸟会受到变力，样自身向前飞行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.

鸟翼上方气流翼尖后方向上盘旋，种现象被称作气流上洗。