生死线 meaning in English

life and death

Mary still hovered between life and death when jem arrived at the house where she lay .
杰姆来到玛丽寄寓的住所，她依然在生死线上挣扎。
You will soon learn that helicopters are not only capable of rapidly responding to emergencies , but in some cases make the difference between life and death
直升机行动组不单进行救急扶危的紧急行动，有时更是跨越生死线的关键。
Finally some officers arrived and defused the explosive situation , and just a handful of the lives that went up in that particular bonfire were saved
最后，来了几个军官，才解决这场一触即发的险情，使一大群处在生死线上的人得救了。
The girl who ever between life and death already grew into know a thing or two , she know death is an easy thing ( how wisfully she ever was attached to life ) . . human come to here just for being alive , for how to live better , if just for death , why came for this transmigration
一个曾经在生死线上挣扎的女儿终于长大了.她懂得死是件容易的事(她曾经对生是多么的依恋) .人来到这世界是为了活着,为了怎么样才能够更好的活着,如果生来就是为了死何苦走这一遭呢