Because happiness is now considered more an entitlement than a pursuit among citizens of prosperous countries, unhappiness has become a sign of failure, of weakness, and a prime source of dread. 因为，繁荣国家的公民认为幸福与其说是一种追求，倒更像是一项权利，忧愁成为失败、软弱的象征，也是恐惧的主要来源。
He's totally unreliable as a source of information. 他提供的消息完全不可信。
They mentioned you as a good source of information. 他们说你消息灵通.
The historian search for primary source of information about the past. 历史学家寻找有关过去的原始资料来源。
An infallible guide; an infallible source of information. 绝无谬误的向导；可靠的资料来源