Defined是一个形容词，意思是“明确的”或“确定的”。它的音标是/dɪˈfaɪnd/。要记住这个单词，你可以将它与“define”（定义）这个词联系起来，因为“defined”是“define”的过去分词形式。
短语拓展：
well-defined：明确的，清晰的clearly defined：明确界定的precisely defined：精确定义的undefined：未定义的造句：
The rules of the game are clearly defined, so there's no confusion about how to play. （游戏规则非常明确，所以关于如何玩没有任何混淆。）The boundaries between the two countries are well-defined, making it easy to tell where one ends and the other begins. （两国之间的边界非常明确，很容易分辨出一个国家在哪里结束，另一个国家在哪里开始。）The job description was precisely defined, so I knew exactly what was expected of me. （工作描述被精确定义，所以我确切知道对我的期望是什么。）