“fight for one's life”别理解成“为了生活而奋斗”，真实含义是积极努力地活着，努力活下来，病危，为生存斗争。

【例句】
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。

They could now fight for their very life, run, or surrender.
那时他们只能够努力活下来、逃跑或投降。