笨瓜

例句：

1. 1. He's always making a fool of himself in front of everyone.
   他在所有人面前总是出丑。
2. 2. She was a simpleton who didn't understand the complexities of the situation.
   她是个不懂事的傻瓜，不理解情况的复杂性。
3. 3. The foolhardy decision to invest in a new technology may pay off in the long run.
   冒险投资新技术的决定可能在长远来看是值得的。