red flag

red flag汉语翻译：
红旗英语解释：
名词 red flag:

a flag that serves as a warning signal

the emblem of socialist revolution

something that irritates or demands immediate action

It's time to shake out the red flag.是把这面红旗打开的时候了。

A red flag is a sign of danger.红旗是危险的信号。

A red flag slowly went up the pole.一面红旗徐徐升起。

The five-star red flag is fluttering in the wind.五星红旗迎风飘扬。