lifeblood

• n. 生机的根源；生命必须的血液；命脉；命根子

life,生命，blood,血。

lifeblood (n.)

also life-blood, 1580s, "blood necessary for life," from life (n.) + blood (n.). Figurative and transferred use is from 1590s.

1. Coal and steel were the region's lifeblood.

煤炭和钢铁曾是这个地区的生命线。

来自柯林斯例句

2. Small businesses are the lifeblood of the economy.

小型企业是经济的生命力所在。

来自柯林斯例句

3. Tourism is the lifeblood of the city.

旅游业是这座城市的命脉。

来自《权威词典》

4. Capable workers are the lifeblood of the business.

能干的工人是工商企业的生命力.

来自《简明英汉词典》

5. The boy is the lifeblood of his parents.

这男孩是他父母的命根子.

来自《现代汉英综合大词典》