1. 笨蛋, 傻子：helical propelling sleeve 螺旋推进套 | simpleton 笨蛋, 傻子 | bursar (大学的)会计, (苏格兰大学)得奖学金的学生
2. 傻冒：杀鸡用牛刀break a butterfly on the wheel | 傻冒blockhead; simpleton; foolishness; to exude foolishness | 沙漠化desertification
3. 愚人：simple 朴实的,天真烂漫的 | simpleton 愚人 | simplify 简化
1. 傻瓜;呆子;容易受骗的人
If you call someone a simpleton, you think they are easily deceived or not very intelligent.
e.g. 'But Ian's such a simpleton', she laughed...
“可是伊恩太傻了，”她笑着说道。
e.g. He was a lightweight, a political simpleton.
他是个无名之辈，头脑简单的政客。