求翻译：車輛通常都已汽油和柴油為燃料。當這些燃料燃燒時，會將有害的氣體和蒸氣釋放到空氣中。柴油引擎比較能將燃料完全燃燒，也比汽油引擎省油。但是，這兩種燃料都會排放出又濃又黑的廢煙，嚴重污染空氣品質。是什么意思？

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Vehicle usually have been gasoline and diesel for fuel. When these fuel ignite, the harmful gases and steam release to the air. Diesel engine compare to the fuel fully ignite, than gasoline engine fuel savings. However, these two types of fuel will be scheduled subject and strong and black the waste

The vehicles all already gasoline and the diesel oil were usually the fuels.When these fuel burning, can releases the harmful gas and the vapor in the air.The diesel engine comparison can burn completely the fuel, also compares the gasoline engine province oil.But, these two fuels can discharge also

Vehicles usually have gasoline and diesel fuel. When these fuels are burned, would release harmful gases and vapors into the air. Diesel engines can be complete combustion of fuel and fuel-efficient than petrol engines. However, these two kinds of fuel waste will emit thick black smoke, polluting th

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