精神病患者

An insane person is unaccountable for his actions.

精神病患者对其行为不负任何责任。

I fear for the city with this madman let loose in it.

让这位精神病患者出来自由活，为这座城市担心。

Objective To establish a method of breath-butagas testing of mental patient.

目建立种精神病人呼出气中丁烷方法,用以诊断精神病患者。