This problem can be resolved by using submerged well method for constructing big diameter water sources well.

采用沉井法施工大口径水源井可解决施工用淡水的问题。

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If the European countries do not adopt measures at the right time and manage the water sources well, then they will encounter the problem of water shortage at the beginning of the next century.

欧洲国家如果不及时采取措施﹐管好水源﹐则在下个世纪初也将遇到缺水的难题。

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Since a number of EHEC infections have been caused by contact with recreational water, it is also important to protect such water areas, as well as drinking-water sources, from animal wastes.

由于很多肠出血性大肠杆菌感染因接触游憩用水所致，对于避免这类水域和饮用水源遭动物粪便污染也很重要。

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The miners have been sent rubber boots as well as chlorine to purify water from underground sources, Manalich said.

CNN: Drilling to reach Chile miners yet to begin