Any of numerous small, flat-bodied, wingless biting or sucking insects of the orders Mallophaga or Anoplura, many of which are external parasites on various animals, including human beings.
数小的，身体扁平，没翼的咬人吸血昆虫，其中许多是多种动物的外部寄生物。
Any of numerous small, flat-bodied, wingless biting or sucking insects of the orders Mallophaga or Anoplura, many of which are external parasites on various animals, including human beings.
数小的，身体扁平，没翼的咬人吸血昆虫，其中许多是多种动物的外部寄生物。
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