raise the alarm

基本解释

A blogger and card-carrying member of the “digerati”, he is worried enough about the internet to raise the alarm about its dangers to human thought and creativity.
作为一个博客写手和正式持牌的“数字文人”，他十分担忧网络会给人类的思想和创新敲响警钟。
eachinese.com
Sloppiness is one thing. But the police tend to be hand-in-glove with popular newspapers. An implicit deal applies: we give you stories, you raise the alarm about criminals on the loose.
漫不经心也就罢了，但是警方往往与通俗报纸往来密切，一桩心照不宣的协定适用于：我们给你提供新闻材料，你把在逃犯的情况向我们报告；
YOU are old.You live alone.You suffer a heart attack.You cannot raise the alarm.You die.
您老了，您孤零零地生活着，您心脏病发作，但您发不出警报，然后，您走了。

This technique has allowed Graham to raise the alarm early and often about potentially dangerous drugs.
FORBES: Face Of The Year: David Graham
Human operators watch for anomalous behaviour and raise the alarm if they detect anything suspicious.
ECONOMIST: Putting it all together
Since environmentalists first began to raise the alarm about greenhouse gases, oil companies have tended to react by circling their wagons.
ECONOMIST: How green is Browne?