“YYY”是什么意思？

“YYY”的意思是名词代替具体的名称、数据等。
双语例句：
This stock quote service implementation returns unique values for the symbols XXX and YYY, and returns zero for anything else.这个股票报价服务实现为符号 XXX 和 YYY 返回唯一的值，对别的符号则返回零。
I was from yyy school. I was young and ignorant then and my uncle was telling my mum what a good school yyy was.我是某某学校毕业的，那个时候我年少无知，舅舅告诉我妈妈那个学校多好多好，结果我进去以后才发现，学校根本就臭名昭著。
Add the plug-in ID of the bridge plug-in to the section in the plugin.xml file of the client plug-in(s) from which you want to access the bridge plug-in.把桥插件的插件 ID添加到客户机插件的 plugin.xml 文件的段中，您需要通过客户机插件访问桥插件。
This Agreement may not be assigned nor transferred by the Company without the prior consent of YYY.权利转让。没有YYY的事先书面同意，本协议的权利不得转让。
Even though there are some points of comparison between XXX and YYY, there is dissimilarity as well.即使在XXX和YYY之间存在某些可以比较的地方，但也是风牛马不相及的。