economic lifeline

• 经济命脉

economic lifeline的用法和样例：

例句

1. Transportation over water has always been the economic artery of Shanghai.
   航运自古以来就是上海经济命脉。
2. Commercially developed, Wuzhou was a commercial center and the economic lifeline of Guangxi in modern times.
   摘要近代梧州商业特别发达，是全省商业之中心，曾一度控制着全省的经济命脉，是广西经济的重心。