定期锻炼帮助你的身体燃烧卡路里。

Regular exercise helps your body ___burn calories.

我们需要氧气来燃烧脂肪和产生能量。

We need oxygen to ___burn fat and create energy.

发动机燃烧柴油来驱动车辆。

The engine ___burns diesel fuel to power the vehicle.