定义: 1.(确切而简要的说明) definition; delimiting 短语和例子确切的定义 an exact definition; 给一个词下定义要比举例说明它的用法困难。 to give a definition of a word is more difficult than to give an illustration of its use.2.(给以确切而简要
元素: 1.(要素) element; elementary substance2.[数学] [化学] element 短语和例子水是含有氢元素和氧元素的化合物。 water is a compound containing the elements hydrogen and oxygen.; 元素表 list of elements; 元素分析 [分析化学] ultimate a
