死馬當活馬醫 [ㄙˇ ㄇㄚˇ ㄉㄤ ㄏㄨㄛˊ ㄇㄚˇ ㄧ; si3 ma3 dang1 huo2 ma3 yi1] lit. to give medicine to a dead horse (idiom); fig. to keep trying everything in a desperate situation ◄ ►