The ball really follows a smooth curved path, so why do batters sometimes look so foolish swinging at them?

球确实顺着平滑弯曲的道路，那么为什么击球者有时会看起来如此愚蠢地去摆动它们？

youdao

While the Teamgeist ball was great for strikers, many goal keepers complained that the ball's aerodynamics created a lack of rotation in the air, making its path at times erratic, like a knuckleball.

由于“团队之星”独特的空气动力学设计，导致飞行的球在空中缺乏旋转，这种设计遭到了很多门将的诟病，他们认为这样的球飞行路径过于飘忽，难以判断。

youdao

Drag is the force of air resistance pushing against a ball's motion and slowing it down, while lift is a force causing a ball to swerve off a straight path.

拉力是一种物体在空气中所受到的阻力，它能产生与球运行方向相反的作用力，减缓球的运行速度，而升力则是一种能使物体偏离直线运行轨迹的力。

youdao

Using the former, players smooth a path from near their ball to the hole, and place their ball in the path to putt, making sure that the distance to the hole is the same as from their original lie.

WSJ: Sand-Greens Golf: A Game Lives On in the Great Plains

Ole Gunnar Solskjaer flicked a long ball into the path of Giggs, who crossed from the left for Scholes to steer the ball home from eight yards.

BBC: Man Utd see off Charlton

Liam Lawrence slipped the ball into the path of his Stoke City team-mate and the unmarked Whelan curled the ball into the top corner from 20 yards.

BBC: Rep of Ireland 2-2 Italy