brightened:brighten 的过去式/过去分词。
/ˈbraɪtənd/
The room brightened when she opened the curtains.
她拉开窗帘时,房间一下子亮了起来。
His expression brightened as he realized the mistake could be fixed, and the tense meeting began to feel less hostile.
当他意识到这个错误还能补救时,神情立刻明朗起来,紧张的会议气氛也不再那么敌对。
brightened 来自动词 brighten(使变亮/变得更愉快),由形容词 bright(明亮的、聪明的、愉快的)加动词后缀 -en 构成,表示“使变得……”。bright 可追溯到古英语 beorht(明亮的、光辉的),与“光亮、清晰”这一核心含义长期相关。