Ecotourisminvolvespeopletravelingtobeautifulbutenviron...
問題詳情:Ecotourisminvolvespeopletravelingtobeautifulbutenvironmentallysensitiveplaces.Suchtripsare __1__ carriedoutwithanexperiencedguide.Overrecentyears,thistypeoftravelhasbeensteadilygai...