英汉词典

1. 热闹状况;活跃
    Activity is a situation in which a lot of things are happening or being done.

    e.g. ...an extraordinary level of activity in the government bonds market.
           政府公债市场异常活跃
    e.g. ...the electrical activity of the brain.
           脑电波的活动

2. 活动
    An activity is something that you spend time doing.

    e.g. You can take part in activities from canoeing to bird watching.
           你可以参与从划独木舟到观鸟等各种活动。

3. （团体为达到某种目的而采取的）活动，行动
    The activities of a group are the things that they do in order to achieve their aims.

activity

    e.g. ...a jail term for terrorist activities...
           因参与恐怖活动而被判的刑期
    e.g. On April 29, the activities of the company were suspended on the orders of the Bank of England.
           4月29日，奉英国银行之命，该公司的各项活动被暂停。