精神病患者

An insane person is unaccountable for his actions.

对其行为不负任何责任。

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

让这出来自由活动，我真为这座城市担心。

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

目的建立种人呼出气中丁烷的检测方法,用以诊断。