direction of motion短语⁶⁸⁹⁹⁵ 基本例句 运动方向 The orientation of a spacecraft relative to itsdirection of motion.飞行姿态宇宙飞船相对于其飞行方向所处的位置 A vector quantity whose magnitude is a body's speed and whose direction is the body'sdirection of motion.速度一种向量,其量值为物体的速率,其方向为物体运动的方向