You use virgin to describe something such as land that has never been used or spoiled.
Within 40 years there will be no virgin forest left.
过不了40年,原始森林将所剩无几。
virgins
A virgin is someone, especially a woman or girl, who has never had sex.
I was a virgin until I was thirty years old.
我到30岁时还是个处女。
You can use virgin to describe someone who has never done or used a particular thing before.
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。
virgin territory
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.
The World Cup is virgin territory for Ecuador.
厄瓜多尔从未举办过世界杯。