After the child was lost, his mother was nearly demented with worry.

孩子走失后，他的妈妈担心得几乎要失去理智了。

The demented man was sent to the insane asylum.

那个精神错乱的人被送进了精神病院。

My demented daughter is the victim of this accident.

我患有痴呆症的女儿是这次事故的受害者。

Sid broke into demented laughter.

锡德狂笑起来

Nursing a demented person is an all-consuming task.

护理一个精神错乱的人是一项非常耗力的任务。

The foam of it covered her lashes and brows, with her red hair. For a minute she looked like a demented Queen Elizabeth.

泡沫覆盖了她的睫毛和眉毛，还有她的红头发。有那么一会儿，她看起来就像一个疯狂的伊丽莎白女王。

Sid broke into demented laughter.

席德突然狂笑起来。

I've been nearly demented with worry about you.

我一直为你担心，都快发疯了。

The man was plainly demented.

那人显然神经错乱。