疟原虫可以通过蚊子的天然习性进行广泛传播。而弓形虫其所感染的龋齿动物对于传播的下个环节却很排斥。
Unlike Plasmodium, however, which can rely on the natural behaviour of mosquitoes to spread it around, Toxoplasma's rodent hosts have a strong aversion to helping it into its next home.
在自然条件下，不同虫群幼虫互不排斥，可聚集成新的较大的虫群。
Under the natural conditions, the larvae of different tea caterpillar groups didn't repel each other, and they clustered into the new and large groups.
在自然条件下，不同虫群幼虫互不排斥，可聚集成新的较大的虫群。
Under the natural conditions, the larvae of different tea caterpillar groups didn't repel each other, and they clustered into the new and large groups.
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