1. At last, the miners struck on an undiscovered gold mine. 最后，矿工们突然发现了一个不为人知的金矿。
2. Leaking such information can stay undiscovered for months, if not years, doing damage to people who sent information, and also to third parties. 信息的泄露可能要几个月甚至几年才能被知道，这样对发送信息的人或第三方都会造成损失。
3. That remarkable news comes with an equally stunning corollary -- the key to success doesn't rest with some undiscovered therapies or treatments. 伴随这一引人注目的新闻的是同样惊人的推论-治疗癌症的关键不在于某些未知治疗方法。
