acceleration law of development of science and technology

例句：

1. 1. The car accelerated as it approachedthe intersection.
   汽车接近十字路口时加速了。
2. 2.The project's progress is accelerating.
   该项目的进展正在加快。
3. 3. The train's speed increased as it left thestation.
   火车离开车站时速度增加了。