In ancient China with a lower hygienic standard, it is very common that peoples daily life is disturbed by the body parasite of louse.
在卫生条件较为落后的中国古代，人体寄生虫虱子干扰人的正常生活，是常见的情形。
In ancient China with a lower hygienic standard, it is very common that peoples daily life is disturbed by the body parasite of louse.
在卫生条件较为落后的中国古代，人体寄生虫虱子干扰人的正常生活，是常见的情形。
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