If you throw a football without it spinning, it would follow a similar trajectory, but it wouldn't tip over.

如果你扔一个足球，它会遵循类似轨迹，但会翻倒。

I don't research the spinning of plates.

我研究盘子。

In the case of objects that move without rotating, all of that kinetic energy goes into translational motion.

在体运动情况下，所有这些 动能用于平移运动。

The ladder isn't rotating, so any torques on it have to add up to zero.

梯子，所以力矩总和 应用于它等于零。

Some are designed for spinning like a football, but making the ball spin or not spin depends on what you're doing with your hand, or a racket or a bat, or whatever it is you're using to move the ball.

有些是为了像足球一样而设计 但让球或取决于你手在做什么 或用球拍或球棒 或任何你用来移动球东西。