If it occurs at other times, it's a red flag warning that the system has been compromised.

如果它出现在其他时候，则就是系统受到危害的危险警报。

youdao

The phrase 'as seen' should act as a red flag warning not to buy unless you have a watchmaker at your elbow to advise you.

除非身边有钟表匠做参谋，否则“如你所见”一词应当作为警告你不要购买的危险信号。

youdao

Looks like you are OK for graduation, and actually, I am getting a warning flag on your academic record here.

看起来你可以毕业了，但事实上，我收到了一个关于你学习成绩的警告。

youdao

The National Weather Service said a red flag warning was in effect until Friday evening.

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Generally, a bearish momentum divergence is a red flag warning signal, which often presages a pullback or correction.

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The National Weather Service in San Diego said a red flag warning was in effect until Friday evening.

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