英汉词典

1. 清醒的;没喝醉的
    When you are sober, you are not drunk.

    e.g. When Dad was sober he was a good father.
           不喝醉的时候，爸爸是一个好父亲。

2. 严肃的;审慎的;头脑清醒的
    A sober person is serious and thoughtful.

    e.g. We are now far more sober and realistic...
           我们现在清醒、现实多了。
    e.g. It was a room filled with sad, sober faces...
           房间里坐满了人，大家都一脸的忧伤和严肃。