the Frame of Reference的用法和樣例：
例句
- Or your reference frame is at rest in an aircraft that accelerates rapidly on takeoff.
另外，你的參照系靜止在一架起飛之後迅速加速的飛機上。 - Additional insight is gained by examining the elastic collision of equally massive particles in the center-of-mass frame of reference.
對質量相等的兩質點的彈性碰撞更徹底的理解，可通過質心參照系而獲得。
