uncover 主要指移去遮盖物，让东西显露出来。也可指揭露阴谋、秘密等。
reveal 多指揭露一直隐藏或隐秘的东西，或启示超乎常人领导能力的'真理。
reveal的例句：
1. Experts reveal only as much as they care to.
专家们只透露了他们想透露的那些。
2. He cannot reveal how much money is involved in the scheme.
他不能透露该计划投入了多少钱。
3. Companies should be made to reveal more about their financial position.
应该要求公司使其财务状况更为透明化。
4. The wall caved in to reveal a blocked-up Victorian fireplace.
墙坍塌了，露出砌在里面的维多利亚时代的壁炉。
5. The hinged seat lifts up to reveal a useful storage space.
把用铰链连接的座位抬起来后，就会发现下面有一个实用的储物空间。