他们推测入侵性强的物种拥有本土植物所不具备的化学武器，因此，本土的害虫、寄生虫和其它植物群对此化学武器都没有任何还击之力。
Their hypothesis was that highly invasive species would have chemical weapons not found in native plants and which pests parasites and other plants would therefore not have evolved any resistance to.
出口粪液寄生虫卵沉降率、粪大肠菌群值两项同时达标率为100%。
The "reaching criteria rate" of the parasite ova sediment and the value of the fecal coliform bacteria were 100% among the excrement in the outlet.
该刊拥有一批较高水平的作者群，刊载论文的内容丰富，引文范围广，是寄生虫病学领域中较为重要的文献来源之一。
This Journal possesses a group of stable and qualified authors, covers substantial content with relatively broad citation, and is an important source of information in parasitological research.
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