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- 問題詳情： Whyiscleanwatersoimportanttodevelopingcountries?Arecentreportshowsthatabout80percentofdiseasesindevelopingcountriesarecausedbypoorwaterandlowsanitation（衞生）conditions.Inthosecountries,womenandgirlsspendseveralhourscollectingwater,butoftenp...
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