airhead

She forgot her phone for the third time this week; her friends jokingly called her an airhead.

她这周第三次忘记带手机了，朋友们开玩笑地叫她傻瓜。

用法提示：此处airhead作名词，意为'傻乎乎的人'，用于形容健忘的人。

During the math test, he stared blankly at the questions, feeling like a complete airhead.

数学考试时，他茫然地盯着题目，感觉自己完全是个笨蛋。

用法提示：此处airhead作名词，描述在压力下思维迟钝的人。

My brother is such an airhead; he put the milk in the cupboard instead of the refrigerator.

我哥哥真是个糊涂蛋，他把牛奶放进了橱柜而不是冰箱。

用法提示：此处airhead作名词，指因粗心而出错的人。