1. （人际关系的）融洽，和睦
    If people are living in harmony with each other, they are living together peacefully rather than fighting or arguing.

    e.g. We must try to live in peace and harmony with ourselves and those around us...
           我们必须努力和我们自己及周围的人和睦相处。
    e.g. He projected himself as the protector of national unity and harmony.
           他把自己标榜成民族团结与和睦的捍卫者。

2. 和声;和谐悦耳的音调
    Harmony is the pleasant combination of different notes of music played at the same time.

harmony什么意思

    e.g. ...complex vocal harmonies.
           复杂的声乐和声
    e.g. ...singing in harmony.
           和声演唱

3. （各组成部分的）协调，和谐，调和
    The harmony of something is the way in which its parts are combined into a pleasant arrangement.

    e.g. ...the ordered harmony of the universe...
           宇宙的有序和谐
    e.g. He looked more relaxed, as if some of the harmony from his surroundings had flowed into him.
           他看起来放松了些，仿佛周围的和谐环境感染了他。