lifeblood

n.生机的根源；生命必须的血液；命脉；命根子

life-blood───生命线；必不可少的主要部分；生命力

livelood───活的

lose blood───失血

beblood───血

blueblood───蓝血

fireflood───n.火驱采油

lifeboat───n.[船][安全]救生艇，救生船

lifebuoy───n.救生圈

lifebuoys───n.救生圈

Coal and steel were the region's lifeblood.───煤炭和钢铁曾是这个地区的生命线。

Tourism is the lifeblood of the city.───旅游业是这座城市的命脉。

Trade is the lifeblood of most modern states.───贸易是大多数现代国家的命脉。

He DID so not just out of modesty but, more important, out of a conviction that political work was the lifeblood of the army.───他这样做，不只是出于谦虚，更是出于把政治工作看成我军的生命线。

This plant has not only been central to the economy of this town. It's been a part of the lifeblood of this community.───这家工厂不仅仅是这座城市的经济中心，更是这里社会的生命之源的一部分。

"The financials are the heart of the credit system, and credit is the lifeblood of our economy, " he said.───“金融机构是信贷体系的核心所在，信贷是我们经济的生命线，”他说。

It is the heart of China, pumping the lifeblood of men and material to every other part along capillaries of water, road, and rail.───这里是中国的心脏，向遍布全国各地的水路、公路及铁路脉络旁的地区源源不断地灌输人力和物力。

As he wrote, this was a novel "written and rewritten by a great artist with his very lifeblood" .───这部小说，正如他所写：“由一位伟大的艺术家呕心沥血所作并一再重写”。

Like a lifeblood, data sharing can help you to work or die in a modern product development and manufacturing environment.───就像维持生命系统的血液一样，数据共享是当今产品开发和工程制造中性命攸关的一环。