1. 鬼；幽灵
    A ghost is the spirit of a dead person that someone believes they can see or feel.

    e.g. ...the ghost of Marie Antoinette...
           玛丽·安托瓦妮特的幽灵
    e.g. The village is haunted by the ghosts of the dead children.
           死去的孩子们的幽灵常在该村出没。

2. （尤指对可怕事物的）记忆，回忆
    The ghost of something, especially of something bad that has happened, is the memory of it.

ghost

    e.g. The President is using the two visits to lay the ghosts of the Munich Agreement.
           总统正借这两次访问来消除《慕尼黑协定》的阴影。
    e.g. ...the ghost of economic mismanagement.
           经济管理不善的梦魇

3. 一丝；一点
    If there is a ghost of something, that thing is so faint or weak that it hardly exists.

ghost

    e.g. He gave the ghost of a smile...
           他露出一丝微笑。
    e.g. The sun was warm and there was just a ghost of a breeze from the north-west.
           阳光和煦，仅有一丝西北风轻轻吹拂。

4. 代人写作；为人代笔
    If a book or other piece of writing is ghosted, it is written by a writer for another person, for example a politician or sportsman, who then publishes it as his or her own work.

    e.g. I published his autobiography, which was very competently ghosted by a woman journalist from the Daily Mail...
           我出版了《每日邮报》的女记者为他代笔的自传，写得颇具文采。
    e.g. I ghosted his weekly rugby column for the Telegraph.
           我为他代写《电讯报》每周的橄榄球专栏。

5. 没有一点（成功的）可能；机会渺茫
    If someone does not stand or does not have a ghost of a chance of doing something, they have very little chance of succeeding in it.

    e.g. He doesn't stand a ghost of a chance of selling the house.
           那房子他根本不可能卖得出去。

6. （人）放弃，撂挑子；（机器）报废，不再运转
    If someone gives up the ghost, they stop trying to do something because they no longer believe they can do it successfully. If a machine gives up the ghost, it stops working.

    e.g. Some firms give up the ghost before they find what they are looking for...
           一些公司没等找到目标便已放弃。
    e.g. The battery in my car gave up the ghost.
           我的汽车电池报废了。