turn the penny

例句：

1. 1. After reading the book, I finally understood its complex plot.
   读完这本书后，我终于理解了它的复杂情节。
2. 2. The teacher explained the problem to us in a way that we could all grasp.
   老师以我们都能理解的方式解释了这个问题。
3. 3. He turned the penny and realized he had been deceived by the scam.
   他仔细思考了一下，意识到他被这个骗局欺骗了。