网络地址链接Rigidbody components take control over an object's position - it makes the objects fall down under the influence of gravity, and can calculate how objects will respond to collisions.
Rigidbody组件控制物体的位置 - 它使物体在重力影响下下落，并可计算物体将怎样响应碰撞。
When manipulating rigidbody parameters you should work inside the FixedUpdate function. Physics simulation is carried out in discrete timesteps. The FixedUpdate function is called immediately before each step.
当操作刚体参数的时候，你应该在FixedUpdate函数中使用它，物理模拟以离散的时间步执行。FixedUpdate函数在每一步之前被立即调用。
Things to watch out for when using rigid bodies:
