zhè / qǐ / shì / gù / guān / xì / dào / xǔ / duō / rén / de / shēng / mìng / zhēn / shì / rén / mìng / guān / tiān这起事故关系到许多人的生命,真是人命关天。This accident concerns many people's lives, so it is a matter of life and death.