an ancient Greek sanctuary (= a holy place) on Mount Parnassus, where an oracle (= a female priest) was believed to be able to answer questions with advice from the god Apollo

He had been to consult the oracle at Delphi. 他曾去德尔斐向那里的女祭司咨询神谕。

The ancient Greeks considered the centre of the world to be at the temple in Delphi. 古希腊人认为世界的中心在德尔斐神庙。