They proliferate rice paddies, shallow ponds, and even slow moving streams.

他们遍布稻田，浅池塘，溪流，甚至滞销。

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Small, shallow ponds have been stocked with red swamp crawfish and are managed for commercial production.

又小又浅的池塘里挤满了克氏螯虾，并被用于商业化的养殖。

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Using a six-square-mile test plot, they found that the organic carbon comes from shallow ponds that were dug to provide soil for flood protection.

科学家们在一块六英里见方的试验田内进行了勘测，他们发现那些有机碳来自筑造防洪大堤取土用的浅塘，有机碳化合物沉淀至塘底并慢慢渗入地下。

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As its grand schemes falter, the state is pressing ahead with a more modest plan to turn between 400 and 800 acres (160-320 hectares) of the sea into shallow ponds.

ECONOMIST: In a ��green�� state, an environmental disaster looms