- 問題詳情: IntheUnitedStatesalone,over100millioncell-phonesarethrownawayeachyear.Cell-phonearepartofaagrowingmountainofelectronicwastelikecomputersandpersonaldigitalassistants.Theelectronicwastestreamisincreasingthreetimesfasterthantraditionalgarbag...
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