The algae must be harvested every day. Extracting the oily components and removing the water is expensive and energy intensive.

藻类必须每天收集，提取藻类的油脂成分以及去除水份这些工序成本昂贵且耗费能源。

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The tasty bivalves are known for removing excess phytoplankton from water and sequestering nutrients in their shells and flesh.

这些美味的双壳贝类生物以清除水中过量的浮游植物闻名于世，它们把营养变成肉和贝壳。

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This means removing the subsidies to industry by raising currently underpriced prices of inputs into industry such as land, energy, water, electricity, the environment, and capital.

这意味着通过提高目前定价过低的工业投入品——譬如土地、能源、水、电、环境和资本——的价格，取消对工业的补贴；

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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'

Scientists have just unveiled an easy-to-use, inexpensive method for removing arsenic from contaminated drinking water using chopped up bits of discarded plastic bottles.

FORBES: "Plastic Bottle" Filters Can Help Millions Poisoned by Arsenic-Contaminated Water

He made his way to the faucet in the corner, where he drank deeply of the sweet water and peed, first removing from the sink a wet bedsheet with a large black-rimmed hole burned in its middle.

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