中国地下水氟污染的现状及研究进展 关键词：地下水；氟污染；现状；研究进展 [gap=1102]Key words：groundwater；fluoride contamination；current situation；research progress
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Quantities of sewage are poured into it daily, 95% of which is untreated, and it is also a depository for industrial effluents, chemicals from farm runoffs and arsenic and fluoride contamination.
ECONOMIST: It must also be clean
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