The drag force acts in the opposite direction to the path of the ball.
阻力方向与球的运行方向相反。
Your ball is on the path on the right hand side.
你的球在右手边的球车路上。
Control an orb ball along the zigzag path and don't hit the wall.
控件一起锯齿形路径的天体球不打墙。
Suppose this is the flight path of the ball. I retreat to a position far behind the table. The ball has just fallen. I start with the paddle well above and behind the ball.
假设这是球的飞行路线，我退到离球台很远的地方， 球正好落下来，我向球的后上方引拍。
Suppose this is the flight path of the ball. I retreat to a position far behind the table. The ball has just fallen. I start with the paddle well above and behind the ball.
假设这是球的飞行路线，我退到离球台很远的地方， 球正好落下来，我向球的后上方引拍。
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