EarthDay, 4 (mark)on22April,isanannualeventaimingtorais...
问题详情:EarthDay, 4 (mark)on22April,isanannualeventaimingtoraisepublicawarenessaboutenvironmentalprotection.Firstcelebrated 5 1970,theDaynowincludeseventsinmorethan190countriesandregions(地区).Nomatt...