key branches of the economy

• 经济命脉

key branches of the economy的用法和样例：

例句

1. You see, the flow of credit is the lifeblood of our economy.
   要知道，信贷流动可是我们经济命脉啊。
2. Those industries that suuport the lifeblood of the country should be nationalized.
   一些关乎国家经济命脉的行业还是应该坚持国有化。