red flag

短语

红旗

发音

red flags 复数 red flags

1.

A flag that is red, especially associated with leftist revolutionary ideologies.
2.

A flag that is red, especially associated with leftist revolutionary ideologies.

A flag used as a signal that the race must be stopped immediately (and possibly restarted).

体育
3.

A cue, warning, or alert; a sign or signal that something is wrong.

红灯

比喻非正式

Improper formatting is a red flag to look for other problems with the data.
4.

Something that will enrage a particular person; a red rag.

红旗

美国习语
5.

A flag formerly used by a railway guard to warn the driver not to start the train.

英国交通

名词