nurse： Fever ， or pyrexia ， is an elevation of the body temperature above normal . It may be caused by malfuncton of the temperature regulating center ， the response of the center to a pyrogen ， exposure to a very high environmental temperature ， or impaired dissipation.

　　Student： How many types of fever are there?

　　N： There are three types ， intermittent fever ， remittent fever and relapsing fever.

　　S： Will you please explain the term hypothermia?

　　N： Hypothermia means a subnomal body temperature.

　　护士：发烧或发热指体温高于正常标准。其原因可能是体温调节中枢功能紊乱、热源刺刺激，气温过高或体温逸散功能受损。

　　学生：有几种热型?

　　护士：有三种。即：间歇热、弛张热和回归热。

　　学生：请您解释一下"体温过低"是什么意思?

　　护士："体温过低"是指低于正常低温。