“Natural playgrounds”的意思、由来-开放百科全书

词条	Natural playgrounds
释义	SeePlayground
随便看	Module:Location map/data/Germany Rhine Module:Location map/data/Germany Rhineland-Palatinate Module:Location map/data/Germany Saarland Module:Location map/data/Germany Saxony Module:Location map/data/Germany Saxony-Anhalt Module:Location map/data/Germany Schleswig-Holstein Module:Location map/data/Germany Thuringia Module:Location map/data/Germany Weser Module:Location map/data/Ghana Module:Location map/data/Gibraltar Module:Location map/data/Gilgit Baltistan/doc Module:Location map/data/Gilgit Baltistan/sandbox Module:Location map/data/Gloucestershire Module:Location map/data/GMU Arlington Module:Location map/data/GMU Arlington/doc Module:Location map/data/GMU Fairfax Module:Location map/data/GMU Fairfax/doc Module:Location map/data/Golan Heights Module:Location map/data/Gran Canaria Module:Location map/data/Grand Cayman/doc Module:Location map/data/Grand Lyon/doc Module:Location map/data/Greater Belfast Module:Location map/data/Greater Europe Module:Location map/data/Greater Europe/doc Module:Location map/data/Greater Johannesburg

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。