窥见一斑

Explanation: That only about 12 　　Usage: Verb-object type; as predicate; that only about 12 　　Source: "Language 98 will be high child testament": "I do not know Yang has always been, Xiangshan learning history, before the boat may glimpse its evident." 　　Examples: Wu Chung-Ming popular folk songs of the flow distribution, but also the description of the novel from the Ming Dynasty ~. ★ De Dong Guan, "Preface" Thesaurus:  Glimpsed