At the drop of a hat關於「At the drop of a hat meaning」標籤，搜尋引擎有相關的訊息討論：
AT THE DROP OF A HAT - Cambridge English Dictionarydictionary.cambridge.org › dictionary › at-the-drop-of-a-hatAt the drop of a hat definition and meaning | Collins English Dictionarywww.collinsdictionary.com › dictionary › at-the-drop-of-a...at the drop of a hat Definitions an