英汉词典

1. 有（不好的）倾向的；易于…的；很可能…的
    To be prone to something, usually something bad, means to have a tendency to be affected by it or to do it.

    e.g. For all her experience, she was still prone to nerves...
           尽管有经验，她还是容易紧张。
    e.g. People with fair skin who sunburn easily are very prone to develop skin cancer.
           皮肤白皙容易晒伤的人极易患皮肤癌。

2. 俯卧的；面部（或腹部）朝下的
    If you are lying prone, you are lying on your front.

prone的翻译

    e.g. Bob slid from his chair and lay prone on the floor...
           鲍勃从椅子上滑下来，趴在了地板上。
    e.g. Since 1991, parents have been advised not to put their infants down to sleep in the prone position.
           自1991年以来就一直建议父母不要让婴儿趴着睡觉。