Tra từ molehill - Từ điển Oxford Advanced Learner 8th

Từ điển Oxford Advanced Learner 8th

molehill mole·hill [molehill molehills] BrE [ˈməʊlhɪl] NAmE [ˈmoʊlhɪl] noun a small pile of earth that a ↑mole leaves on the surface of the ground when it digs underground see make a mountain out of a molehill at ↑mountain