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【正文】   stillputintorivers.  Weknowthatifthepopulationcontinuestoriseatthepresentrate,inafewyears,therewon’?  Ifweeatmorevegetablesandlessmeat,.  Ournaturalresourceswilllastlongerifwelearntorecyciethem.  Theworldpopulationwillnotrisesoquicklyifpeopleusemodernmethodsofbirthcontrol.  Finally,ifweeducatepeopletothinkabouttheproblemsweshallhaveabetterandcleanerplanetinthefuture.  環(huán)保英文演講稿5  ?  ,’’’sourdutytokeepourearthcleanandtidy.  ,whereverwegotoday,’sexistence.  ,newlawsmustbepassedtoplacestrictcontroloverindustrialpollution,thepub!  
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