# 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。