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.
在那里，饥饿而喜欢吃小东西的清洁工濑鱼会将鲨鱼的死皮、外部寄生虫以及其他讨厌的东西去除。
There, hungry and detail-driven cleaner wrasse fish rid sharks of dead skin, external parasites and other undesirables.
柑桔软蚧和褐软蚧两类蚧虫，在国外部分国家成为难以对付的害虫，主要是缺乏具有制约作用的寄生性天敌。
Two Soft Acales Coccus pseudomanoliarum Kuw. and C. hesperidum L. are difficult to be controlled in some oversea areas where parasitic wasps are not occurred.
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