A.freezeRotation B.angularVelocity C.mass D.isKinematic
A.mass B.isKinematic C.useGravity D.drag
A.凍結(jié)x軸上的轉(zhuǎn)向 B.凍結(jié)每個坐標軸的位移 C.使物體下落 D.使物體不下落