shǒu shù qián / yī shēng / fǎn fù / què rèn / měi gè / xì jié / yīn wèi / zhè / shì / xìng mìng yōu guān / de / dà shì

手术前，医生反复确认每个细节，因为这是性命攸关的大事。

Before the operation, the doctor repeatedly checked every detail because this was a matter of life and death.