英汉词典

1. 免费的
    If something is free, you can have it or use it without paying for it.

    e.g. The seminars are free, with lunch provided.
           研讨会不收会务费，而且还提供午餐。
    e.g. ...a free brochure with details of gift vouchers.
           内有礼券详情的免费宣传册

2. free of charge -> see charge

3. 自由的;不受约束的;没有限制的
    Someone or something that is free is not restricted, controlled, or limited, for example by rules, customs, or other people.

free

    e.g. The government will be free to pursue its economic policies...
           政府将可不受限制地实行其经济政策。
    e.g. The elections were free and fair...
           选举是自由公正的。