性命交关

zhè shì yī jiàn xìng mìng jiāo guān de shì

这是一件性命交关的事。

This is a matter of life and death.

tā men bèi nà xìng mìng jiāo guān de huǒ xī miè le

他们被那性命交关的火熄灭了。

They let the bloody fire out.