unprotected opening无防护的墙身洞口
unprotected steel无防护层的钢构件
unprotected goods无包装的货物
unprotected population未受保护种群
unprotected piece无根子
Unprotected contract不受保护的合约
Unprotected Live唱片名
unprotected thermometer无套温度计
ADJ（形容词） An unprotected person or place is not watched over or defended, and so they may be harmed or attacked. (人或地方) 未受保护的; 未设防的
The landing beaches would be unprotected.
登陆的海滩可能没有设防。
ADJ（形容词） If something is unprotected, it is not covered or treated with anything, and so it may easily be damaged. 无保护的
Exposure of unprotected skin to the sun carries the risk of developing skin cancer.
无保护的皮肤在太阳暴晒下有患皮肤癌的危险。
ADJ（形容词） If two people have unprotected sex, they do not use a condom to protect against sexually-transmitted diseases and pregnancy. 未用避孕套的 [ADJ n]
...the dangers of unprotected sex.
…未用避孕套的性行为的危险。