Failing to be observant while walking or driving can be life threatening.

走路或开车时不注意观察可能会危及生命。

youdao

His heart condition is not life-threatening.

他的心脏病不会危及生命。

《牛津词典》

Scalds, burns and poisoning can all be life-threatening.

烫伤、烧伤和中毒都有可能危及生命。

《柯林斯英汉双解大词典》

People who live through life threatening situations sometimes describe a calming presence or guiding voice hat helps them survive.

VOA: special.2010.02.24

Lupus can be life threatening if left untreated.

VOA: special.2009.04.14

A Libyan official says a young Dutch boy who was the lone survivor did not have life threatening injuries.

VOA: standard.2010.05.12

In the case of colon cancer, however, this kind of magical thinking is life threatening.

FORBES: Reason #73 That No One Wants a Colonoscopy

Our obesity epidemic causes debilitating illness, life threatening diseases and misery for millions of people.

BBC: Call for soft drink sugar tax in Budget

One-quarter of these problems--which are often life threatening--are caused by preventable medical errors, the study says.

FORBES: Deadly Drug Mistakes Common In Seniors