除此之外，当咖啡渣生产出的燃料在引擎内燃烧后不会产生刺激性的气味——仅仅有一点咖啡的味道。
Moreover, when run in an engine the fuel does not have an offensive smell—just a whiff of coffee.
听到这里，咖啡爱好者们可要沉住气了，因为这1万多杯咖啡燃料全都来自于Costa咖啡分店所提供的废弃咖啡渣。
But coffee aficionados shouldn't scream just yet -- the fuel comes from waste coffee grounds provided by a branch of Costa Coffee.
他们发现，咖啡渣为原料生产的燃料品质和市场上最好的生物燃料品质一样优良。
They found that coffee biodiesel is comparable to the best biodiesels on the market.
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