“The First 20 Million Is Always The Hardest”的意思、由来-开放百科全书

词条	The First 20 Million Is Always The Hardest
释义	SeeThe First $20 Million Is Always the Hardest
随便看	Piletocera meekii Piletocera megaspilalis Piletocera melanauges Piletocera melesalis Piletocera mesophaealis Piletocera metochrealis Piletocera micralis Piletocera microcentra Piletocera microdontalis Piletocera nigridentalis Piletocera nudicornis Piletocera ochrosema Piletocera octosemalis Piletocera opacalis Piletocera orientalis Piletocera parki Piletocera penicillalis Piletocera phaeocraspedalis Piletocera plumbicostalis Piletocera punctatalis Piletocera purpureofusa Piletocera quadralis Piletocera ranalis Piletocera rechingeri Piletocera reunionalis

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。