The amount of carbon monoxide that an engine gives off can be reduced by special devices designed to make the engineburn the fuel more efficiently.
使发动机更有效地燃烧燃料而设计的特殊装置可以降低发动机一氧化碳的排放量。
2
As you gain muscle, your body gains a bigger "engine" to burn calories more efficiently - which can result in weight loss.
你增加肌肉的同时，身体会获得更加强大的“发动机”以更高效地燃烧卡路里，这会让你体重减轻。
3
Crunch 'n 'munch EATR will grab plants with its robotic arm, chop them with a mini chainsaw, and burn them in its onboard steam combustion engine to make power. Francis Govers iii.