accelerate and decelerate的用法和样例：
- Key game with about change direction arrow keys to accelerate and decelerate the space bar to jump.
- Robots tall enough to interact effectively in human environments have a high center of gravity and must accelerate and decelerate slowly, as well as avoid steep ramps, to keep from falling over.
- It accelerates and decelerates, puts balls of goal.
- The Research of Accelerate and Decelerate Control Techno-logy of Step Motor
- A SCM-Based Control Method to Accelerate and Decelerate Stepping Motor