- lifeblood (of something)
the thing that keeps something strong and healthy and is necessary for successful development Topics Successc2(事物的)命脉;生命线;命根子 - (literary)
a person’s blood, when it is thought of as the thing that is necessary for life (人的)命脉;生命必需的血液 The wound was draining the lifeblood from him. 伤口正在榨干他的血。