Tra từ gum something up - Từ điển Oxford Advanced Learner 8th

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Từ điển Oxford Advanced Learner 8th

gum something up ˌgum sthˈup derived usually passive (BrE, informal)to cover or fill sth with a sticky substance so that it stops moving or working as it should •Open and close the valves occasionally so they don't get gummed up. Main entry: ↑gum_derived