庞大的肌体由微小的细胞组成，复杂的机器由简单的零件构成．这给我们一个启示：对于那些纷繁杂难的分式不等式，能否觅求一些简单的不等式（如“细胞”、“零件”不等式），以便应用它们去巧妙、简捷地达到证明目的？答案是肯定的，这就是本文的宗旨——用熟知的不等式去... The huge body consists of tiny cells, and the complex machine consists of simple parts. This gives us an inspiration: For those complicated inequalities, can we plead for some simple inequalities (such as “cells” and “parts” inequality) so that we can use them to subtly and simply achieve the purpose of proof? The answer is yes, this is the purpose of this article - to use well-known inequalities ...