The present invention raises the burning efficiency greatly and realizes no smoke burning completely.

本发明极大地提高燃烧效率，完全实现无烟燃烧。

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Whereas some of these changes are intended mainly to increase the productivity of existing plants, completely new technologies for burning coal cleanly are also being developed.

虽然某些技术改进是渐进的，其目的只是提高现有电厂的生产率，但人们正在开发全新的清洁燃煤的技术。

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That's still big enough potentially to produce meteorites -- which are meteoroids, or fragments thereof, that do manage to hit the Earth -- before burning completely.

CNN: Meteor lights up East Coast -- and social media

Police are out on the streets but seem outnumbered and unable to completely stop the burning and looting, Norgaard observed.

CNN: Kenya president narrows poll gap

Meanwhile, other completely different approaches involve burning coal in pure oxygen (oxyfuel), or turning it into a mixture of carbon monoxide and hydrogen, which is then burned.

BBC: Whatever happened to carbon capture?