1. Mr.Smith was gleeful over the achievement they had made.
    史密斯先生对他们取得的成就感到万分高兴。

1. 欣喜的；激动的；（常指）幸灾乐祸的
    Someone who is gleeful is happy and excited, often because of someone else''s bad luck.

    e.g. He took an almost gleeful delight in showing how wrong they can be.
           他几乎是幸灾乐祸地指出他们大错特错。

1. full of high-spirited delight

    e.g. a joyful heart

    Synonym: elatedjoyfuljubilant