When you throw a nice spiral pass, gravity is only acting as a secondary force on the ball.

当你抛出一个漂亮的螺旋传球时，重力只是作为一个辅助力作用在球上。

When you throw a good spiral pass, the ball starts pointed up tips over mid-air and ends pointed down.

当你抛出一个很棒的螺旋传球时，球开始时尖朝上，在半空中倾斜，结束时尖朝下。