Wind movements are also modified in cities because buildings increase the friction on air flowing around them.
风向在城市里也会改变，因为建筑物增加了它们周围流动的空气的摩擦力。
2
A number of players have insisted the new ball is too light and this is what makes its movements through the air more unstable.
部分球员坚持认为新的球太亮眼了，且飞到空中时方向不稳定。
3
There's a particular scene where the camera is stationed behind the ritual and you see the rhythmic movements of the Na'vi with their hands in the air.