单词

nurture nursery numerous numerical numerate numb nullify nylon null nuisance nucleus nuance noxious nowhere null and void novice notorious novel nought novelty notify notion nourishment notch nourish notary not to say notable nostalgia notation norm nominee nothing nominate not at all nothing to do with nominal nil nobility nitrogen nickel nicety nightmare nibble nevertheless neutralize negligible negligence neglect neurotic negotiable negative negation navigation necessitate neat navigable naval nautical nausea native natal nasty narrative nap namely naked narcotic