driving medium

例句：

1. 1. The driving medium is the force that propels the car forward.
   驱动力介质是推动汽车前进的力量。
2. 2. The new technology uses a driving medium made from renewable energy sources.
   新技术使用一种由可再生能源制成的驱动力介质。
3. 3. The research team used a driving medium to study the effects of gravity on objects.
   研究团队使用一种驱动力介质来研究重力对物体的影响。