“The Day of 6 Billion”的意思、由来-开放百科全书

词条	The Day of 6 Billion
释义	SeeWorld population milestonesSix billion
随便看	Al ain university of science and technology Al Ain University of Science and Technology Alain Vanzo Alain vanzo Alain Vasselle Alain Vasseur Alain Veinstein Alain Viala Alain Vidalies Alain Wegmann Alain Wisner Alain Yoda Al Ain Zoo Alairac Alair Cruz Vicente Alair de Souza Camargo Júnior Alai sheep Alais Iselda and Carenza Alais, Yselda, and Carenza Ala, Italy Al Aitken Alai Valley Alaiyadikkuthu Alaiza Pashkevich Alajaervi

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。