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

如果你扔一个不旋球，它会遵循类似轨迹，但不会翻倒。

I don't research the spinning of plates.

我不研究盘子旋。

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

梯子不旋，所以力矩总和 应用于它旋等于零。

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

在物体不旋运动情况下，所有这些 动能用于平移运动。

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

（2）和（3）在不考虑旋矢量情况下，隧道结构矢量表示为3。

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

现在你可能想知道你是否曾经得到过不旋黑洞，因为宇宙中一切都在以某种方式旋。

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.

有些是为了像球一样旋而设计 但让球旋或不旋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。