Tra từ front line - Từ điển Oxford Advanced Learner 8th

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Từ điển Oxford Advanced Learner 8th

front line the ˌfront ˈline [front line front lines] BrE NAmE noun singular an area where the enemies are facing each other during a war and where fighting takes place •Tanks have been deployed all along the front line. •front-line troops Idiom: ↑in the front line