Manta rays regularly visit "cleaning stations" where small wrasse fish clean them of parasites.

蝠鲼会定期造访“清理站”，在那里，小濑鱼会帮助它们清理身上的寄生虫。

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Like cars lined up at a car wash, sharks and rays gather at ocean cleaning stations that new research finds are mostly located at seamounts.

就好比在洗车店门口那些排着队的汽车，海洋中的鲨鱼和鳐鱼也聚在清洗站，根据最新的研究发现，这些清洗站大部分位于海底山。

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The waste water was piped up from the sub-stations to the central station for cleaning.

污水通过管道从分站向上输送到总站去净化。

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Algae also offer the potential of aiding in the curbing of CO2 emissions from power stations and cement factories, and in cleaning nitrates and phosphates from agricultural runoff water and effluent from sewage plants, while simultaneously furnishing useful fuels such as biodiesel and ethanol according to how the algae are processed.

FORBES: 'Artificial Cells' May Provide Souce Of Algal Fuel