词穷理尽

Explanation: Could not find the reasons that have nothing to say. 　　Source: Tang and Cui Zhiyuan, "Xiao meet unexpectedly Messire book" Yang dry mold II, King asked 笺 cents, Shi Zhi sad tone urgent voice, the only reason to do shame stumped. " 　　Examples: The meaning of courtiers, the body has not been, ~, not seeking to go. ★ Sushi Song "defense again asked the museum staff Sapporo child policy" of the two Thesaurus:  Ciqionglijue