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This has led to lower water levels on the river, which has caused the river's water to decline.

然而，这导致了河流的水位下降，河流的水量减少。

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During periods of low demand, jockey pumps are used to meet these lower water flow requirements.

在需求较低的时期，赛马泵用于满足这些较低的水流量要求。

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She says lower costs have eased her family's financial burden because they used to spend much more on water.

VOA: standard.2010.08.04

And then they found that they could freeze-dry this preparation of virus, and freeze-drying to lower the temperature, freeze it, then extract out all the water, so you're left with a powder, basically a powdered form of the virus, that could be shipped all over the world, and then reconstituted by adding water to it.

研究者们发现可以冷冻干燥这些病毒制剂,冷冻干燥就是就是降低温度,冷冻病毒,然后提取出所有水份,然后就剩下一些粉末,这主要是粉末状的病毒,这样就能将它运往全世界,并可以通过加水来恢复病毒的活性

耶鲁公开课 - 生物医学工程探索课程节选

The program known as Master Meter provided these families with ease of access, cleaner water and lower costs.

VOA: standard.2010.08.04

Because of lower water-tables and depleted aquifers, many rivers can no longer replenish themselves in the dry season.

ECONOMIST: Farmers pay the price for decades of wasteful water use

Aside from new varieties that have lower water requirements, pest- and disease-resistant gene-spliced crop varieties also make water use more efficient indirectly.

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These new varieties grow with smaller amounts of water or with lower-quality water, such as recycled water or water high in natural mineral salts.

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