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Từ điển Oxford Advanced Learner 8th
cloak-and-dagger
ˌcloak-and-ˈdagger [cloak-and-dagger] BrE NAmE adjective only before noun cloak-and-dagger activities are secret and mysterious, sometimes in a way that people think is unnecessary or ridiculous •Why can't we be open about it? Do we really need all this cloak-and-dagger stuff?
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