find formatting

例句：

1. 1. I found the book on the table when I searched for it.
   我在找书时在桌子上发现了它。
2. 2. The scientist discovered a new species of bird in the Amazon rainforest.
   科学家在亚马逊雨林中发现了一种新的鸟类物种。
3. 3. The detective ascertained that the murder was committed by someone else.
   侦探查明了谋杀案是别人所为。