1. 处女;童男
    A virgin is someone who has never had sex.

    e.g. I was a virgin until I was thirty years old...
           我30岁前一直是个处女。
    e.g. They were both virgins when they met and married.
           他们从相识到结婚前都未曾经历男女之事。

2. （土地等）未使用的，未开发的
    You use virgin to describe something such as land that has never been used or spoiled.

    e.g. Within 40 years there will be no virgin forest left.
           过不了40年，就将不会再有未开发的森林了。
    e.g. ...a sloping field of virgin snow.
           覆着皑皑白雪的坡地

3. 陌生的情形;全新的领域
    If you say that a situation is virgin territory, you mean that you have no experience of it and it is completely new for you.

virgin在线翻译

4. 新手;雏儿；完全无经验的人
    You can use virgin to describe someone who has never done or used a particular thing before.

    e.g. Until he appeared in 'In the Line of Fire' Malkovich had been an action-movie virgin...
           出演《火线狙击》以前，马尔科维奇从未演过动作片。
    e.g. He was a political virgin when Mrs Thatcher picked him as Lord Advocate.
           当撒切尔夫人任命他为苏格兰检察总长时，他是个完全没有从政经验的新人。