曾经沧海

Explanation: Have: experienced; the sea: the sea. Metaphors have seen major aspects of society, not to ordinary things in the eye. 　　Usage: Verb-object type; as the predicate attribute; with approval and wide knowledge metaphor 　　Source: Tang Yuan Zhen "from thinking" poem: "sailed the seven seas make life difficult for the water Gorges cloud." 　　Examples: Man is the ~, wagon also spent three days and nights under, which is crowded, and only two hours, nothing, nothing. (Mao Dun, "a sufficient degree of man") Thesaurus:  Pool of sophisticated, having experienced great changes in the world, have ebb and flow, sup sorrows by the ladleful, Thorn Set way, ado anfractuosity, Hardships, mountains are high,torrents swift Antonym Group:  Go into the society Not deep, with approval of ebb and flow