Howtoprotectourenvironmenthasbecomeoneofthebiggestproblemsintheworld.Wedoeverythingcandoarealdifferencetoourenvironment. Weneedtopickuplitteraroundus.You‘dbetterjoinaprogrammetoprotectourenvironment.Youmustn‘tcutdowntoomanytrees.Wecanprotectfactoriesfrompollutingtherivers. Wecandoourbesttokeeptheairclear!Ihopeeveryonedothese! 譯文: 如何保護環(huán)境已成為世界 (共 500 字) [閱讀本文] >>