This increases their air-resistance and reduces the shock of impact when they hit the ground.

这样就加大了空气阻力，并减少了它们着地时冲击力带来的震动。

youdao

This increases their air-resistance and reduces the shock of impact when they hit the ground.

这样就加大了空气阻力，并减少了它们着地时冲击力带来的震动。

youdao