愚昧

例句：

1. 1. He was so foolish to trust a stranger.
   他那么愚蠢，竟然相信一个陌生人。
2. 2. The teacher explained the concept of physics in a way that made sense to everyone.
   老师用一种大家都能理解的方式解释了物理的概念。
3. 3. She was too ignorant to realize the dangers of smoking.
   她太无知了，没有意识到吸烟的危险。