“救生索”用英语怎么说？

我一直在寻找一条可以伴我一生救生索.I'm drowning in the pain , breaking down again , looking for a lifeline.一种沉下或拉上深水潜水员的救生索.A line used to raise and lower deep - sea divers.消防救生索及配件系列.Standard on Breathing Air Quality for Fire and E...