flutter /ˈflʌtə/ I. vi. 1. 飘动，飘扬：The red flags are fluttering in the wind. 红旗随风飘扬。2.拍翅，拍翅而飞：The butterfly fluttered from flower to flower. 蝴蝶拍打着翅膀在花丛中飞来飞去。3. (心脏等)快速跳动：His heart fluttered with excitement. 由于激动他的心跳加快。‖II. n. ［c］激动不安，紧张：put sb. in a flutter 使某人焦急不安