1. （常指不情愿地）承认，供认
    If you admit that something bad, unpleasant, or embarrassing is true, you agree, often unwillingly, that it is true.

    e.g. I am willing to admit that I do make mistakes...
           我愿意承认我确实会犯错。
    e.g. Up to two thirds of 14 to 16 year olds admit to buying drink illegally...
           14到16岁的青少年中多达2/3的人承认非法买过酒。

2. 接受（入院）；收治
    If someone is admitted to hospital, they are taken into hospital for treatment and kept there until they are well enough to go home.

    e.g. She was admitted to hospital with a soaring temperature...
           她因发高烧被送进医院。
    e.g. He was admitted yesterday for treatment of blood clots in his lungs.
           他昨天入院治疗肺部的血块。

3. 准许…加入；接纳；招收
    If someone is admitted to an organization or group, they are allowed to join it.

admit

    e.g. He was admitted to the Academie Culinaire de France...
           他获准加入法兰西厨艺学会。
    e.g. The Parachute Regiment could be forced to admit women.
           伞兵团可能会被迫招收女性。

4. 准许…进入
    To admit someone to a place means to allow them to enter it.

    e.g. Embassy security personnel refused to admit him or his wife...
           使馆保安人员不允许他和夫人进入。
    e.g. Journalists are rarely admitted to the region.
           新闻记者很少获准进入该地区。