古努比亚人居住的地区经常发生斑疹伤寒，但令人惊讶的是，他们的骨骼中很少有这种疾病的常见证据。
The ancient Nubians inhabited an area in which typhus occurs, yet surprisingly few of their skeletons show the usual evidence of this disease.
目前，归为弯曲杆菌属的细菌有17个菌种和6个亚种，其中在人类疾病中最经常报告发生的为空肠弯曲菌（空肠亚种）和大肠弯曲菌。
Currently, there are 17 species and 6 subspecies assigned to the genus Campylobacter, of which the most frequently reported in human diseases are C. jejuni (subspecies jejuni) and C. coli.
此研究预估了指定地区特定疾病的发生率以及经常吸二手烟的人数。
The study used estimates of the incidence of specific diseases and of the number of people exposed to second-hand smoke in particular areas.
尽管ARDS经常发生在有肺病的患者身上，肺功能正常的人也能在严重的外伤或者感染后发生这种疾病。
Although ARDS often occurs in people who have lung disease, even people with normal lungs can develop the condition as the result of severe trauma or an infection.
疾病会发生真正的吸血鬼，因为一个人通常会经常，只是他们不逗留长达生病。
Sickness will happen to real vampires usually as often as it will to a person, just they don't stay as sick for as long.
疾病会发生真正的吸血鬼，因为一个人通常会经常，只是他们不逗留长达生病。
Sickness will happen to real vampires usually as often as it will to a person, just they don't stay as sick for as long.
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