insane

/ˌɪnˈseɪn/

afflicted with or characteristic of mental derangement

Chinese meaning: 精神错乱的；疯狂的

The court declared the defendant insane and unfit for trial.

法庭宣布被告精神失常，不适合受审。

It would be insane to drive in such heavy fog without headlights.

在这样的大雾中不开车灯开车简直是疯了。