I really don't feel a bit sick, no night sweats, no fevers.我真的感觉一点毛病也没有，没盗汗也不发热。Certain fevers recur at regular intervals.有些发烧症状会周期性反复出现。He had bad digestion, fevers and numberless other illnesses.他有消化不良、发烧、以及其它数不尽的病。Continual fevers weaken the vitality.连续发烧会使人元气大伤。