1 ADJ [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
SYN vulnerable, helpless, defenceless, unarmed
2 ADJ [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
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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。
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This leaves fertile soil unprotected and prone to erosion.
这会让肥沃的土壤暴露在外，使其容易受到侵蚀。
SYN exposed, naked, unshielded, open
3 ADJ [ADJ n] 未用避孕套的；无防护的 If two people have unprotected sex, they do not use a condom when they have sex. 未用避孕套的；无防护的
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