Now let's focus on a specific example of a natural predator that can cause a lot of damage to coral reefs—the Crown of Thorns, or CoT starfish.

现在，让我们来看一个自然捕食者的具体例子，它会对珊瑚礁造成很大的伤害——那就是刺冠海星。

youdao

Birds are one of mankind's best friends, not only are they the natural predator of many types of harmful insects, they are one of the most important links in nature's food chain.

鸟类是人类最好的朋友之一，它们不但是许多害虫的天敌，自然生物链重要一环。

youdao

In a natural habitat they likewise would become particularly anxious in the presence of a predator in bright light where they would be more easily detected.

在自然界的领地，老鼠会表现特别焦虑，因为捕食者在亮光的环境下出现，此时它们更易被发现。

youdao

With no natural predator in the water, and almost no domestic market to sell them as food, Asian Carp threaten to expand into waterways through the city of Chicago, and into Lake Michigan, about 320 kilometers northwest of Havana.

VOA: standard.2010.07.20

The caterpillars are a rare visitor from southern England and have no natural predator.

BBC: Natural invasion causes health problems

Elk and bison populations increased dramatically because there was no natural predator to keep their numbers in check.

CNN: Gray wolf: Still endangered?

The long-term goal is to cultivate a natural predator to the bugs.

WSJ: Out of Odor: Offensive-Smelling Bugs Put U.S. Farmers on the Defensive