Last time we talked about photosynthesis, the process by which plants use light to convert carbon dioxide and water into food.

上次我们讨论了光合作用，即植物利用光将二氧化碳和水转化为食物的过程。

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Plant productivity is a measure of the rate of the photosynthesis process that green plants use to convert solar energy, carbon dioxide and water to sugar, oxygen and eventually plant tissue.

植物生产力是衡量光合作用过程速率的一种方法，绿色植物利用这一过程将太阳能，二氧化碳和水转换成糖，氧气，最终成为植物组织。

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An artificial leaf would use a reaction that forms part of the natural process of photosynthesis to turn sunlight and water into a clean fuel source.

“人造叶”将利用构成光合作用中部分自然过程的反应作用，将阳光和水变成一种清洁燃料的来源。

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The list is to be used to decide which sites of special scientific interest (SSSI) should have money spent on them to prevent over-abstraction by water-companies, which is the process of removing water for domestic or industrial use.

BBC: Campaigners claim beauty spots 'at risk'

"The process also uses less water and energy - we simply use coloured bottles to avoid using dye, " says Alex Lo, the company's managing director.

BBC: Technology

These use an electrical process to transform salt and water into chlorine and caustic soda (a.k.a. lye), which are the building blocks of everything from plastics to soap.

FORBES: Chemical Balance