red flag

US 
UK 
  • n.示警红旗;(象征革命或共产主义的)红旗
  • Web危险信号;红旗军演;红旗演习
Plural Form:red flags  
Red flag
n.
1.
示警红旗a flag used to warn people of danger
2.
(象征革命或共产主义的)红旗a red flag as a symbol of revolution or communism

Sample Sentence

Definition:
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Source:AllAll,DictionaryDictionary,WebWeb
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