N字开头的单词或词组
neolithicNational Aeronautics and Space AdministrationnitrousNJPnubilityN-factornavigablenauseatingnarrow-mindedno-goodnonlivingno-faultnygmanosedivenucleoidNBFnaphthaNelaton's linenullifynitrous oxideneurobiologynavigationalnota beneNBTnewly-builtnebulizernoumenonnumber linenecktieniftynitric oxideno endnogginneighborlyneocortexnakednessnomogramnitritenot so badnullablenimblyNormandy