Some of the patients carefully to find: the severity of their illnesses often recurrence interval the same time, some a month, some two months -----, In fact, this biological clock is in trouble.

• 有些细心的患者会发现：自己的病情复发往往会间隔相同的时间，有的一个月，有的两个月-----，其实这都是生物钟在作怪。