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發表於:2016-06-23
Itisundeniablethattheworseningenvironmenthasbecomethebiggestconcernofthepresent-dayworld.Landresourcesaredwindlingbecauseofwater[複習必備|海量免費學習視頻資源盡在“學而思...
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發表於:2016-11-24
Theearthscalechangeofclimatehasbroughtanewkindofnaturaldisasterandthedevelopedandcomplicatedcitysystemisholdingalatentriskofexpandingthedamageartificially.Alsopeoplehasbe...
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發表於:2022-06-21
Nowadaysmoreandmorepeoplerealizeit`snecessaryandimportanttoprotecttheenvironment.Alsotherearesomepeoplewhodon`tpayattentiontohygieneandtheycan`tstoplitteringtherubbishcas...