不上不下

Explanation: Do not increase, get down. Described the dilemma. 　　Usage: Joint type; as the predicate attribute, complement; described neither good nor bad 　　Source: Song Zhuang Zhou Warring States, "Zhuang Zi of Life": "Under the previous not, then the anger of good people; lower than on the people forgetful; flattening, in the body care, was sick." 　　Results: A foot cross on horseback 　　Postscript: A foot cross on horseback Thesaurus:  fall short of the best but be better than the worst, be willing to be middle reaches (of a river), Not seeking active power, But they try too