An anthelmintic used to treat hookworm and pinworm and roundworm infestations .

用来治疗十二指肠、蛲虫和蛔虫横行的杀虫。

Historically , areas of africa have experienced periodic locusts infestations , which can completely destroy crops .

历史上,非洲地区蝗虫侵扰经历周期,它可以完全摧毁农作物.

Infestations of this pest can cause serious damage .

这条虫的大批出没可能造成严重损坏。

Aiming treatment at those animals would reduce the likelihood of resistance emerging without harming a farmer 's ability to control infestations .

集中治疗这些动物则会降低耐药性发生的可能性，同时也不会损害农民控制虫害的能力。

Infestations of these caterpillars defoliate oaks and other hardwood trees but usually do no permanent damage .

横行的毛虫使得橡树落叶和其他硬木树但是通常不会有持久的损害.