代理: 1.(暂时代人担任某种职务) act on behalf of someone in a responsible position 短语和例子代理厂长 acting manager of a factory; 他是暂时代理她的职务。 he is temporarily acting for her in that post.2.(依法接受委托代表别人工作) act as p
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