stepless acceleration

例句：

1. 1. The car's stepless acceleration is impressive.
   这辆车的无级加速令人印象深刻。
2. 2. The new sports car has a stepless acceleration system.
   这款新型跑车配备了无级加速系统。
3. 3. The driver skillfully maneuvers the car through the stepless acceleration.
   驾驶员巧妙地通过无级加速操控着汽车。