warn about

基本解释

But Messrs Amis and Buckley are right to warn about the threat of the “silver tsunami”.
但是艾米斯和巴克利先生警告“银发海啸”的威胁，这一点是没错的。
And those who warn about the risks of action must explain why these risks should worry us more than the certainty of continued mass suffering if we do nothing.
那些警告采取行动就可以带来风险的人必须解释，为什么我们对这些风险的担忧应该超过如果坐视不动则肯定要引起大规模痛苦延续的道理。
Given this history, why do Republicans advocate further tax cuts for the very rich even as they warn about deficits and demand drastic cuts in social insurance programs?
考虑到这样的历史背景，为何共和党人一面对财政赤字发出警告，并警告要对社会保险计划进行大幅削减，另一方面却提倡对非常富有的阶层进一步减税？

Rebecca Chiao says harassmap.org will help warn the public about areas where there is a high risk of harassment.
I wanted to warn you about that.
我只是想要警告你们一下。
耶鲁公开课 - 死亡课程节选
A voice next to her in the plane called out to warn her about a dangerous hill nearby.

It is one of several logistics and shipping businesses to warn about a cooling amid economic uncertainty.
FORBES: A Disrupted Delivery: UPS Shows Weak Q3 Sales On Slowed Global Trade