运动学刚体和其他刚体碰撞时可以将之唤醒，而且，放在其上时，能够对其施加摩擦力。

Kinematic Rigidbodies correctly wake up other Rigidbodies when they collide with them, and they apply friction to Rigidbodies placed on top of them.

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所以如果你有许多希望四处移动并有不同的对象要恰好砸到它们的静态碰撞器，那就用运动学刚体碰撞器吧。

So if you have a lot of Static Colliders that you want to move around and have different object fall on them correctly, use Kinematic Rigidbody Colliders.

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Bullet是一个3d的开源物理引擎，支持3d的刚体和软体力学以及碰撞检测。

Bullet is a 3d open source physics engine that supports rigid - and soft-body dynamics and collision detection in 3d.

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