1. In the past this process of transition has often proven difficult. 在过去，这种转变过程常证明是艰难的。
2. With geological maps, books, and atlases you can find out all the proven sites of precious minerals. 有了地质地图、书籍和地图册，你就可以找到所有已探明的珍贵矿藏的位置。
3. It is the victim who is often put on trial and, to add insult to injury, she is presumed guilty until proven innocent of provoking the rape. 受到审问的往往是受害者，更糟糕的是，她被假定为有罪，直到证明强奸并非由她挑逗而引起。
4. This philosophy has proven its worth. 这个哲理已经证明了它的价值。
5. Seven years later, they were proven wrong. 7年后，事实证明他们错了。
