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

如果你扔一个不旋转的足球，它会遵循类似的轨迹，但不会翻倒。

I don't research the spinning of plates.

我不研究盘子的旋转。

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

不旋转运动的情况下，所有这些 动能于平移运动。

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

梯子不旋转，所矩的总和 应于它的旋转等于零。

Now you may wonder if you ever get non-rotating  black holes as everything in the universe is spinning in some way.

现你可能想知道你是否曾经得到过不旋转的黑洞，因为宇宙中的一切都某种方式旋转。

(2) and (3), without considering the rotational deformation vector, the deformation vector of the tunnel structure is expressed as 3.

（2）和（3）不考虑旋转变形矢量的情况下，隧道结构的变形矢量表示为3。

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旋转而设计的 但让球旋转或不旋转取决于你的手做什么 或球拍或球棒 或任何你来移动球的东西。