1. （宗教中）默想，打坐，冥想
    Meditation is the act of remaining in a silent and calm state for a period of time, as part of a religious training, or so that you are more able to deal with the problems of everyday life.

    e.g. Many busy executives have begun to practice yoga and meditation.
           许多忙碌的主管开始练习瑜伽和冥想。

2. 深思熟虑;苦思冥想
    Meditation is the act of thinking about something very carefully and deeply for a long time.

    e.g. ...the man, lost in meditation, walking with slow steps along the shore...
           这名陷入沉思中的男子，沿着岸边慢慢地走着
    e.g. In his lonely meditations Antony had been forced to the conclusion that there had been rumours.
           独自静心想来，安东尼断定曾有流言蜚语。

3. （关于某主题的）感想,沉思录
    A meditation on a particular subject is something such as a piece of writing or a speech which expresses deep thoughts about that subject.

    e.g. In fact, the entire novel is a long meditation on childbearing and mortality...
           实际上，整部小说就是一部关于生儿育女与道德伦理的长篇沉思录。
    e.g. The title track is a pointed meditation on a continent gone wrong.
           主打歌是对一个误入歧途的大陆的深刻沉思。