英语语法分析

By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk.

通过与啮齿动物争夺种子，黑蚂蚁有助于控制啮齿动物的数量，这些啮齿动物会对公众健康构成威胁。

It may also occur among totally unrelated forms that compete for the same resource, such as seed-eating rodents and ants.

它也可能发生在完全不相关的、争夺相同资源的组织中，比如以种子为食的啮齿动物和蚂蚁。

Interestingly, the island rule is reversed for small mammals such as rodents, for which gigantism is favored under insular conditions.

有趣的是，对于小型哺乳动物，如啮齿类动物，岛屿规则是相反的，因为在岛状条件下，巨头主义是有利的。