fight for one's life 积极努力地活着，努力活下来（由于生病，受伤或被袭击后）

【例句】
She's been fighting for her life for days—she really needs an organ transplant.
这些天她一直积极努力地活着--她真的需要器官移植。

A young cyclist is fighting for his life after the accident.
事故发生后，一名年轻的自行车手正为自己积极努力活下来。