lifeline
n
1 (nautical 海)
(a) line or rope for saving life such as that attached to a lifebelt, or fastened along the deck of a ship in a storm for sailors to hold on to 救生索.
(b) line attached to a deep-sea diver (深海潛水員的)信號繩.
2 (fig 比喻) anything on which sb/sth depends for continued existence 生命線; 命脈
Public transport is a lifeline for many rural communities. 公共交通對許多農村居民來說是不可或缺的.
??? 情景例句
Sorry about the inconvenience.
對不起添麻煩了。
Keep some till more come.
更多的到手以前,要保持手里的一點。
Instead, I saw that they had discovered a new route.