Vector3.zero 等价于 Vector3(0,0,0)

Vector3.one 等价于 Vector3(1,1,1)

Vector3.forward 等价于 Vector3(0,0,1) ，Z轴

Vector3.up 等价于 Vector3(0,1,0)，y轴

Vector3.right 等价于 Vector3(1,0,0)，X轴