There are less expensive and more efficient water filtering systems.

有更便宜和更有效的水过滤系统。

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Water supply: water filtering and distribution, water to water district, in charge of pressurized, high-rise building pressurization.

供水：水厂过滤与输送、水厂分区送水、主管增压、高层建筑增压。

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Fields become less resistant to water stress and the water table is no longer resupplied by water filtering through, worsening the effects of droughts.

农田的抗水分胁迫能力下降，而且地下水位得不到渗透水的补充，加重了干旱的影响。

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Here at IT-Harvest Global Headquarters we have installed a new technology: reverse osmosis water filtering.

FORBES: Clean That Network Traffic

One risk is that the mining operations could generate huge plumes of sediment that could drift through the sea - choking any marine life that feeds by ingesting water and filtering out its food sources.

BBC: UK Seabed Resources joins deep-ocean mineral-mining rush

Leiba says that activated carbon water filters -- like Brita pitchers or faucet attachments -- are a safe and affordable option for filtering tap water.

CNN: Is your bottled water safe?