1.norm：n. 1. 标准，规范2. （工作量）定额
Of his age, the child is above the norm in arithmetic.(在他那个年龄, 这个孩子的算术能力是超过标准的。)
2.notary：n. 公证人
3.novice：n. 初学者，新手
4.nuance：n. （色彩，意义，感情等）细微差别
A baby is sensitive to the slightestnuances in its mother’s voice.(婴儿对母亲声音的最细小变化都很敏感。)
5.numb：a. 失去知觉的v. 使麻木
His fingers were numb with cold.(他的手冻得发麻。)