An important juncture of life and death; a moment when one's fate hangs in the balance; at the crucial moment of life and death; be a moment [a turning point] of life and death; be a matter of life or death; be confronted with a crisis of life and death;in a moment [hour] of desperation; 这个生病的小姑娘整夜躺在床上, 处于生死关头, 直到退烧才脱险。 The little sick girl lay all night between life and death until her fever was gone.
