1. It seemed like a foolish, harebrained idea. 这似乎是一个愚蠢的,轻率的想法。
2. Jumping into the icy water was a harebrained idea. 跳入冰水这个想法真是愚蠢。
3. No matter how strong the evidence supporting it, conservation was viewed as a harebrained fantasy of fuzzy-headed intellectuals. 不管支持它的证据有多么强而有力,节约能源一直被看作只有头脑发昏的知识分子才抱有的傻瓜般的幻想。