此外，升级机动车内的柴油过滤装置很容易，燃烧生物废料的炉灶可改造成以太阳能或天然气为燃料。

Next, diesel filters in cars can be upgraded, and biomass-burning stoves can be exchanged for technology that uses solar power or natural gas.

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来自波斯湾底部的甲烷气体在未完全燃烧后，经过那些像意大利面缠绕在一起的钢管来进行过滤。

Methane from the bottom of the Persian Gulf is part-combusted and filtered in a spaghetti-like tangle of steel pipes.

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据奥地利钻石飞行器公司介绍，他们的涡轮飞机燃烧温度低，此外还加装了空气过滤器，因此在恶劣的气象条件下不会出现那些安全问题。

But Diamond's turbo-charged aircraft does not have problems under such conditions due to low combustion temperatures and air filters, Austrian company Diamond Aircraft said.

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