Weallknowthatrecycli的精选

问题详情：Weallknowthatrecyclingrubbishisveryimportant.Butsometimesitisnotsoconvenientwhenwecan’tfindarecyclingbinanywhere.NowateamofmiddleschoolstudentsfromtheUShassolvedthatproblembydesigningtheirRec...