古 = ancient,
希腊 = Greece.
希腊 is the phonetic transliteration (Hellas). The term covers roughly the archaic, classical, and Hellenistic periods — Homer through Alexander. Key figures like
苏格拉底 (Socrates),
柏拉图 (Plato),
亚里士多德 (Aristotle) are central in Chinese high-school and philosophy curricula.