At the 2009 China-Africa Summit, China pledged to build 100 clean energy projects in Africa covering solar, biogas, and hydropower.

在2009年中非首脑峰会上，中国承诺将在非洲兴建包括太阳能、沼气和水电在内的100个清洁能源项目。

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The airtight installation to deposit organic matter witch be fermented by microorganism and making biogas, we call it biogas digester in China.

有机物被微生物厌氧发酵消化并制取人工沼气的密闭装置，在我国称为沼气池。

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Elsewhere in China, biogas projects have proven more popular than in Yunnan, where colder temperatures generally require a greenhouse to cover the units.

CNN: 'Green' revolution under way in rural China