1. 兴高采烈的；快乐的；高兴的
    Someone who is jolly is happy and cheerful in their appearance or behaviour.

    e.g. She was a jolly, kindhearted woman.
           她是个心地善良、整天乐呵呵的女人。

2. 令人愉快的；欢快的；惬意的
    A jolly event is lively and enjoyable.

    e.g. I was looking forward to a jolly party...
           我期待着有一个令人愉快的聚会。
    e.g. She had a very jolly time in Korea.
           她在韩国玩得很惬意。

3. （用于强调）很，非常
    Jolly is sometimes used to emphasize an adjective or adverb.

jolly的解释

    e.g. She was jolly good at jigsaws...
           她拼图玩得很棒。
    e.g. It was jolly hard work, but I loved it.
           这可是件很苦的差事，不过我喜欢。

4. （用于强调看法或意图，表示恼火或生气）当然，无疑，真是
    Jolly well is sometimes used to emphasize an opinion or intention, and to express annoyance or anger.

jolly在线翻译

    e.g. We can hardly just tell him what we jolly well think of him can we?...
           我们不能就这么直接地告诉他我们到底是怎么看他的，是吧？
    e.g. She was jolly well not going to let them get away with it.
           她肯定不会在这件事上就这么放过他们。