He seemed to be on the verge of total derangement.

他似乎已濒临精神崩溃的边缘。

Most people take it as a sign of derangement.

但大部分民众则将此番言论看作痴人说梦。

She began to think he was in mental derangement.

她开始想这个人一定是精神错乱了。

MRI has essentially replaced arthrography for the evaluation of internal derangement of the knee.

对评价膝关节内紊乱，MRI已基本上取代了关节造影。

The third letter, from another source, provides an explanation of the lady's curious mental derangement .

第三封信，来自另一个朋友，解释了这个妇女的耐人寻味的精神错乱。