If these great cats become extinct, the smaller animals they prey upon will overpopulate the forests.
如果这些大型猫科动物灭绝了，那么它们捕食的小型动物将会使森林中物种的密度过高。
Large bugs in the Lethocerinae family have been known to prey upon small vertebrates including fish and frogs.
我们知道Lethocerinae科(半翅负子蝽科昆虫的一类)的大型昆虫会捕食包括鱼和蛙类在内的小型脊椎动物。
Baboons most often form close bonds with relatives, the researchers said, and the stability of those connections is partly a matter of luck since lions and leopards often prey upon baboons.
研究者表示，狒狒通常会与亲属建立亲密的关系，不过由于狮子和豹子的捕食，使得这种关系的稳定性含有一定的运气成分。
The larvae prey upon small aphids.
这种幼虫以小蚜虫为食。
Stronger animals prey upon weaker ones.
强大的动物捕食弱小的动物。
Stronger animals prey upon weaker ones.
强大的动物捕食弱小的动物。
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