生死關頭 [－－关头]

Jyutping sang1 sei2 gwaan1 tau4
Pinyin shēng sǐ guān tóu

Definitions (CC-CEDICT)
  1. the critical moment
  2. life and death crisis
Definitions (Wiktionary)
  1. noun
    life-or-death moment; a moment which determines one's survival
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）