殚思极虑

Explanation: Satan: do; considered: a new life. Describe the exhausted mind. 　　Usage: Joint type; as the predicate attribute; describe the exhaustion of mind 　　Source: Tang Bai "policy first" one: "Satan think most consider to make Wei Chen made the road almost offer! CD to direct speech, ignorant of the death on." 　　Examples: Yan Jingming personally presided over the meeting, ~, to be as open-source strategy for twelve. (High-Yang "mother Gong" eighty-first back) Thesaurus:  go to great pains, deliberately planning, work hard and carefully to keep one's business going, elaboration, painstaking accomplishment, Deep thinking, make extraordinarily painstaking efforts, lucubrate, Bruising, cudgel one's `brains think very hard, Of peaceful contemplation search for, make painstaking efforts, think twice about doing sth., Puzzle, to manage with great pain Antonym Group:  Lver Caogu, regard … as a trifling matter