Philadelphia Lawyer直译为“费城律师”，其英文释义为：a lawyer who has a detailed knowledge of legal technicalities and exploits them for a client's benefit，即精通法律技术细节并利用这些知识为客户谋取利益的律师。

来源：在殖民地时期，一位纽约移民在报纸上批评总督横征暴敛，之后该移民被逮捕并被控诽谤。费城的一位律师为其做抗辩，最终该移民无罪释放。后来人们就用Philadelphia Lawyer来代表那些心怀正义，为人民谋取利益的律师。

参考双语例句：

The first great victory for freedom of the press was won by a Philadelphia lawyer defending a New York editor.

最早争取言论自由获得的伟大胜利是费城一位律师替纽约一位编辑辩护赢的。

I won't undertake to answer Dary's question... I'm not an encyclopedia, neither am I a Philadelphia lawyer.

我不同意回答戴丽的问题……我既不是百科全书，也不是精明强干的费城律师。