In the past the social structure was such that people didn't trust young people because they were felt to have insufficientexperience. But once they got into the structure, and got older and more experienced, they didn't dare to criticize this system.
因為以前的社會體系基本上是不信任「嘴上無毛」的、體制外的小伙子的言論，而一旦進入這個體系，老了、世故了，也就根本不敢發言去批判這個體系。