Is it to warn of predators?

那么这叫声是为了警告捕食者么？

youdao

In many cases, there are no safety devices or alarms to warn of a serious problem.

在许多情况下没有安全装置或警报来提醒严重的问题的存在。

youdao

That is true, he said, whether the goal is restoring fertility to African soil or building a system to warn of tsunamis.

他说，事实就是如此，不论我们的目的是恢复非洲土地的肥沃还是建立一个海啸预警系统。

youdao

The World Health Organization, the United Nations health agency, uses a system of six phases to warn of possible influenza pandemics.

VOA: special.2009.05.06

And as an added incentive for you to pay attention, I'm going to warn you that this particular simulation will appear in the final or a variant of it.

作为提高你们注意力的激励，我要警告你们,这个特殊的仿真程,或者它的变种会再期末考试出现。

麻省理工公开课 - 计算机科学及编程导论课程节选

But I want to warn everybody ahead of time, I will not be following the textbook.

不过我先提个醒,我不会完全参照课本

耶鲁公开课 - 博弈论课程节选

But a number of interested parties are hyping this problem to warn of near-Biblical doom.

FORBES: Y2K fear merchants

In December 1999, Bayer changed the labeling on Baycol to warn of the Lopid drug interaction.

FORBES: FDA Fix No. 5: Forget Labels

Greenspan could have used his enormous stature to warn of the dangers of buying overvalued houses.

CNN: Why middle class has taken a big hit