adj.发狂的；[医]精神错乱状态的
He writes in despair, and the result is a demented book. 他是在绝望写作中的，写出来的是一本疯狂的书。
When her child was two hours late, she became quite demented. 她孩子晚了两个小时，她心急如焚。
No one knows for certain the identity of this masked and demented murderer. 没人知道这个带着面具、精神错乱杀手的真实身份。
