living death
noun [ S ] uk/ˌlɪv.ɪŋ ˈdeθ/ us/ˌlɪv.ɪŋ ˈdeθ/
生不如死的生活，活受罪，煎熬
a life that is so full of suffering that it would be better to be dead
She can't walk or feed herself and she can barely speak - it's a living death. 她自己无法走路，也无法吃东西，而且几乎无法说话——真是活受罪啊。