live for为…而生活，以…为生活目的
She would live for herself.
她将为自己活着。
He's got nothing to live for.
没什么钱过日子才这么说的

authority 权威; 权力
Who has the authority to make decisions?
谁有权做决定？
Teddy honey, I'm sorry,But your father has a very small area of authority...
宝贝儿泰迪,真的抱歉了,不过你爸爸在家倒是没什么发言权