This nameless person pushed the human race over a historic threshold, for it was in that year that mankind became, for the first time in its history, a predominantly urban species.
出自-2013年6月阅读原文
柯林斯高阶英汉双解学习词典释义
ADJ
不知其名的;无名的
You describe people or things as nameless when you do not know their name or when they do not have a name.
If you say that someone or something will remain nameless, you mean that you will not mention their name, often because you do not want to embarrass them.