流过鸟翅膀的空气在翼尖后向上流动，这种现象被称为上升流。

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

youdao

流过鸟翅膀的空气在翼尖后向上流动，这种现象被称为上升流。

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

youdao