If I had noticed the warning signs , none of this would have happened.

如果我注意到了那些预警征兆，这种事就一桩也不会发生了。

《牛津词典》

The minister gave a warning that if war broke out, it would be catastrophic.

大臣警告说战争一旦爆发，将会是灾难性的。

《柯林斯英汉双解大词典》

If a person removes the warning, day after day, with a painkiller, he or she may pass the point of easy control.

如果一个人日复一日地用止痛药来消除疼痛带来的警告，他或她可能会错过容易控制病情的时机。

youdao

But many more would have died if not for a tsunami warning from the Japanese Meteorological Agency.

VOA: special.2011.06.07

If one or more of the warning signs are present, a doctor should examine you immediately.

VOA: special.2010.07.06

But if violations continue, an official warning could follow, and eventually a recommendation to declassify the site.

VOA: standard.2010.08.05

It is not as if warning flags had not been raised elsewhere.

FORBES: And Deliver Us From Systemic Risk: The Fed Transcripts

He explained that it takes about 20 hours for such an EMP to reach Earth from the sun, giving us a window to react and prepare if the warning is timely enough.

FORBES: Huge Solar Flares Could Spell Catastrophe for Earth

From May 2011, every website must post a warning if they want to put cookies on a computer.

BBC: Beware the cookie monster: a new law aims to protect privacy