今天我们要学的词是 indefinite. Indefinite 形容词，意思是不明确的，无限期的。The head coach has decided to take an indefinite leave of absence to care for his sick wife. 为了照顾生病的妻子，球队主教练决定无限期请长假。The union launched an indefinite strike, requesting shorter hours and better pay. 工会发起无限期罢工，要求缩短工时，增加工资。The bridge was closed indefinitely for repair work to be done. 这座大桥要接受检修，将无限期停止使用。好的，今天我们学习的词是 indefinite, indefinite, indefinite.