枉费心机

Explanation: Vain vain, in vain. White bother. 　　Usage: Verb-object type; as predicate, object; containing derogatory 　　Source: Yuan Anonymous "river battle of wits" You make such a second folding section segment, hard dare machine can also vain. " 　　Examples: ~ Empty effort, eliminate snow Spring futile. ★ Ming Xu Zhonglin "Gods" Forty-back 　　Results: Tofu bypass; the well fishing the moon; duck incubation 　　Postscript: Tofu bypass; the well fishing the moon; duck incubation Thesaurus:  not likely to happen in a century, once in a blue moon, walk with difficulty, fish for a needle in the ocean; look for a needle in a haystack, Impossible and, Sea Fishing, Makes all things easy, the sound of footsteps in a deserted valley-a news or a statement which one does not hear often,or a thing that was seldom to found, Rarities, once in thousand years, sth.seldom seen or hardly possible as the iron tree blooms, Hard-won, defy Beyond the bounds of, strength of nine bulls and two tigers,mighty force, doomed petition like asking a tiger for its hide, Leather and Fox plan Antonym Group:  Have no choice but Shengji, Just to stoop and gather Are all, as thick as June blackerries, ubiquitous, overrun, cataclysm crosscurrent, Attracting attention Are all, common and numerous, Even flat-bed truck