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

That is, until he saw me spending more time with my checklists and processes than I did with my team a big red flag (warning sign).

我是这么翻译的：更确切的说，直到他看到我在检查清单和过程上花的时间比与团队相处还要多时…

youdao

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

CNN: SHARE THIS

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

FORBES: Home Builders Could Become Heartbreakers Again

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

CNN: Evacuations begin as California wildfire grows