1. 限制，限定（防止扩散蔓延）
    To confine something to a particular place or group means to prevent it from spreading beyond that place or group.

    e.g. Health officials have successfully confined the epidemic to the Tabatinga area...
           卫生官员成功地将疫情控制在塔巴廷加地区。
    e.g. The US will soon be taking steps to confine the conflict.
           美国很快就会采取措施限制冲突。

2. 限制(自己或自己的活动);使受局限
    If you confine yourself or your activities to something, you do only that thing and are involved with nothing else.

    e.g. He did not confine himself to the one language...
           他没把自己局限于这一门语言。
    e.g. Yoko had largely confined her activities to the world of big business...
           洋子主要是做大生意。

3. 监禁;关押；禁闭
    If someone is confined to a mental institution, prison, or other place, they are sent there and are not allowed to leave for a period of time.

    e.g. The woman will be confined to a mental institution...
           这个女人将被关进精神病院。
    e.g. He announced that the army and police had been confined to barracks.
           他通告说军队和警察已经被禁闭在营房中不得外出。

4. 边界;界限;范围
    Something that is within the confines of an area or place is within the boundaries enclosing it.

    e.g. The movie is set entirely within the confines of the abandoned factory.
           电影的拍摄完全是在这个废弃的工厂厂区内进行。
    e.g. ...the wild grass and weeds that grew in the confines of the grandstand.
           大看台上丛生的野草

5. 限制;局限
    The confines of a situation, system, or activity are the limits or restrictions it involves.

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    e.g. ...away from the confines of the British class system...
           超越英国社会等级制度的限制
    e.g. I can't stand the confines of this marriage.
           我受不了这段婚姻的限制。