English Dictionary

life-or-death

adj

Of critical importance to the survival of a living organism. / Having death as a possible or even likely outcome; perilous. / Of critical importance to the success of a particular endeavor.

The doctor made a life-or-death decision to perform the surgery.

意味（1）

Of critical importance to the survival of a living organism.

Good camoflouge is life or death for many animals in the wild.

意味（2）

Having death as a possible or even likely outcome; perilous.

Ascending Mount Everest can be life or death for an inexperienced climber.

意味（3）

Of critical importance to the success of a particular endeavor.

Obtaining financing was a life-or-death matter for the research.