1·For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
例如，无论一个舞者多么想要跳离地板，然后开始旋转，角动量守恒定律绝对阻止这样的动作。
2·I am the spin angular momentum.
我就是旋转的角动量。
3·It has spin angular momentum.
有了旋转的角动量。
4·That's a spin angular momentum.
那是旋转的角动量。
5·Look at that spin angular momentum.
观察那个旋转角动量。
6·Why? Because it has angular momentum.
为什么，因为有了一个角动量。
7·Angular momentum is in this direction.
角动量是这个方向了。
8·What will the spin angular momentum do?
旋转的角动量会怎样呢？
9·What will the angular momentum vector do?
角动量的矢量会怎样呢？
10·Angular momentum is now in this direction.
角动量现在是在这个方向。
1·For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
例如，无论一个舞者多么想要跳离地板，然后开始旋转，角动量守恒定律绝对阻止这样的动作。
2·Angular momentum is now in this direction.
角动量现在是在这个方向。
3·Angular momentum is in this direction.
角动量是这个方向了。
4·So, for two skaters of the same mass rotating at the same speed, the one with its mass more extended in space will have the greater angular momentum.
因此，对于以相同速度旋转的两个同质量选手来说，肢体在空间中更为外扩的那个选手将具备更大的角动量。
5·That means if there's torque, there's a change of angular momentum.
这意味着，如果那有一个力矩，就会有角动量的改变。