# lifeblood
##### 词义
- 英:/ˈlaɪfblʌd/; 美:/ˈlaɪfblʌd/
- #词性/n (事物的)命脉;生命线;命根子;生命必需的血液
##### 例句
- Tourism is the lifeblood of the city .
- 旅游业是这座城市的命脉。
- Trade is the lifeblood of our country .
- 贸易是我国的命脉。
- Coal and steel were the region 's lifeblood .
- 煤炭和钢铁曾是这个地区的生命线。