单词	Napier's bones
释义	Napier's bones /ˈneɪpɪəzbəʊnz / plural noun Mathematics Slips of ivory or other material divided into sections marked with digits, devised by John Napier and formerly used to facilitate multiplication and division.These rods however are quite a lot longer than Napier's bones usually were, so are too big to put in a pocket.... He described a method of multiplication using rods with numbers marked off on them, called Napier's bones. Then stick the page onto a card and cut the bones out and pronto - you will have your own Napier's bones!
随便看	unreconstituted unreconstructed unrecordable unrecorded unrecording unrecounted unrecoverable unrecoverably unrecovered unrecruitable unrecruited unrectifiable unrectified unrecuperable unrecyclable unred Frenched French English French Equatorial Africa Frencher Frenchery French fact French fake French flageolet French 'flu

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。