| 释义 | 
		 NBrE /en/NAmE /en/ noun (also n)  (Ns, N's, n's BrE /enz/  NAmE /enz/ )  [C, U] the 14th letter of the English alphabet 英语字母表的第 14 个字母◆'Night' begins with (an) N/'N'.night 一词以字母 n 开头。 [U] (mathematics 数学) used to represent a number whose value is not mentioned (表示不定数)◆The equation is impossible for any value of n greater than 2.  这个等式对于任何大于 2 的数值都不成立。  ➡  see also nth   NBrE /en/NAmE /en/ abbreviation (NAmE also   No.) north; northern 北方(的);北部(的)◆N Ireland 北爱尔兰 newton  牛(顿)(力的单位)  NBrE /en/NAmE /en/ symbolthe symbol for the chemical element nitrogen (化学元素)氮  |