楼主的这句话是一句被民间戏谑修改过的一句俗语，字面翻译可以是：In the Changjiang River the waves behind drive on those before，and those before die on the sandy beach.这句俗语原文是：长江后浪推前浪。

世上新人换旧人英文对应版本：Time makes it inevitable that in every profession,young men replace the old.。