太阳能是一种新型能源。
天然气水合物是近年来才引起世界各国广泛注意的一种新型能源。
In recent years, natural gas hydrate is regarded as a kind of new energy resources that attract attention of all countries in the world.
天然气水合物是储量巨大的一种新型能源，如何有效地开采是关键问题。
Natural gas hydrate is a newly potentially non-conventional energy resource. How to exploit it is a big problem.
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