1. 表示;意味着;意思是
    If an event, a sign, or a symbol signifies something, it is a sign of that thing or represents that thing.

    e.g. The contrasting approaches to Europe signified a sharp difference between the major parties...
           对欧洲截然不同的态度表明两大政党间存在巨大差异。
    e.g. The symbol displayed outside a restaurant signifies there's excellent cuisine inside.
           餐馆外的招牌表明里面有美味佳肴可以享用。

2. (用记号或手势)表明，表达，表示
    If you signify something, you make a sign or gesture in order to communicate a particular meaning.

    e.g. Two jurors signified their dissent...
           两名陪审团成员表示了异议。
    e.g. The UN flag was raised at the airport yesterday to signify that control had passed into its hands.
           昨天机场升起了联合国的旗帜，表明控制权已移交给联合国了。