N字开头的单词或词组
NPPnubilityno errornighty-nightnullablenitritenumber lockno-faultnauseatingnavigationalnasusnarcnarrowingnoise reductionnakednessneurobiologyno connectionnitrous oxidenitrousnew technologyno-goodno-callnonlivingNPDneurologistNormandynecktieNobel's explosiveNMSnogginnarcissistNational Aeronautics and Space Administrationnegusnose-diveNikkeinotarial certificatenewly-builtnebulizernosediveNCUnone the wiserNelaton's line
