1ADJ [ADJ n, verb-link ADJ, ADJ after verb](人或地方)未受保护的,未设防的 An unprotected person or place is not looked after or defended, and so they may be harmed or attacked. (人或地方)未受保护的,未设防的
2ADJ [ADJ n, verb-link ADJ, ADJ after verb]暴露在外的;易受损的 If something is unprotected, it is not covered or treated with anything, and so it may easily be damaged. 暴露在外的;易受损的
Exposure of unprotected skin to the sun carries the risk of developing skin cancer.
皮肤没有采取任何防晒措施就在太阳下曝晒的话有得皮肤癌的危险。
This leaves fertile soil unprotected and prone to erosion.