妙手回春 miàoshǒu-huíchūn
[effect a miraculous cure and bring the dying back to life;show admirable skill in curing diseases and bringing life to patients;the physician with magic hand acts like a charm] 对医术精良医师的称赞之语。比喻使沉疴转愈,有起死回生之术
不可救药 bùkě-jiùyào
[at the point of death;be a gone (hopeless) case with sb.;beyond (past) cure (hope)] 病重到已无法用药医治,比喻人或事物坏到无法挽救的地步
惜其乱势已成,不可救药。——《宋史·钦宗纪赞》