As air meets the wing's solid surface, a thin layer sticks to the wing.

当空气遇到机翼的固体表面时，一层薄薄的空气会粘在机翼上。

The pressure across the wing's lower surface is thus higher than that above the upper surface.

因此，机翼下表面的压力高于上表面的压力。

Some might emphasize the air's behavior at the wing's surface, others the upward force created as the air is deflected downwards.

有些人可能会强调机翼表面的空气行为，其他人可能会强调空气向下偏转时产生的向上力。

This increased speed is coupled with a decrease in pressure above the wing, which pulls even more air across the wing's upper surface.

这种增加的速度与机翼上方压力的降低相结合，从而将更多的空气拉过机翼的上表面。

The slow-moving air beneath the wing exerts greater pressure on the wing's lower surface than the fast-moving air exerts on the wing's upper surface.

机翼下方缓慢移动的空气对机翼下表面施加的压力比快速移动的空气对机翼上表面施加的压力更大。

Other factors, like the air that's flowing meters beyond the wing's surface— being swept up, then down— as well as air vortices formed at the wing's tips, all influence lift.

其他因素， 例如在机翼表面外流动数米的空气——被向上扫掠，然后向下——以及在机翼尖端形成的空气涡流，都会影响升力。