1. While natural gas use increases, use of coal as fuel is decreasing.
    随着天然气利用量的增长，煤炭作为燃料的使用量正在减少。

2. The car consumes a lot of fuel.
    这辆汽车很费汽油.

3. Natural gas, an outstanding energy fuel, can be used to heat homes, make electricity, and power cars.
    天然气这种优良的能量燃料可以用于家庭取暖、发电和驱动汽车。

4. His studies with rats have demonstrated two primary effects of activity: vigorous physical exercise provides the brain with more fuel, and skill-based exercise increases the formation of connections in the brain, which, according to the proposals of
    他对老鼠的研究已经表明运动具有两大功效：强力体育运动给大脑提供更多的燃料，而技巧性的运动则增强大脑神经的联结。依照某些科学家的见解，这种联结能使大脑更好地处理信息。

5. Yet, loaded with practice bombs and 8,000 pounds of fuel, the mostly aluminum aircraft weighs some 15 tons.
    可是，携带着演习炸弹和8,000磅汽油，这架主要用铝合金制造的飞机重达15吨左右。

6. It can fuel a sense of self-worth and accomplishment.
    它可以激发一种自我价值和成就感,

7. Food and fuel were scarce in this region.
    这地区食物和燃料都很缺乏。