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omkring 40% av hu s h ll en p landsbygden, som frnr vara n de inte r anslutna till det allm n na avloppsrenings- n tet, f rv n tas bli tvungna att fr bttr a avloppsvattenreningen.
it is expected that 40% of households in the countryside that are not connected to public wastewater treatment, will have to improve the wastewater treatment facilities.
最后更新: 2014-02-06
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