瞑思苦想

Explanation: Their brains trying to come hard like 　　Usage: Joint type; as predicate; with a compliment 　　Source: "October" 1981, No. 2 moment you close the eyes in here thinking hard thinking, his mind must have been wondering how to do it again? - I can guess. " Thesaurus:  go to great pains, deliberately planning, work hard and carefully to keep one's business going, elaboration, painstaking accomplishment, rack one's brains, Deep thinking, make extraordinarily painstaking efforts, lucubrate, Bruising, cudgel one's `brains think very hard, make painstaking efforts, think twice about doing sth., Puzzle, to manage with great pain Antonym Group:  Lver Caogu, regard … as a trifling matter