/flæp ||; flæp/verb (
flapping;flapped)
1 [I,T] to move (sth) up and down or from side to side, especially in the wind （使）上下或左右摆动（尤指随风飘扬）: The sails were flapping in the wind. 船帆迎风拍动。The bird flapped its wings and flew away. 那鸟振翅而去。
2 [I] (informal 非正式) to become worried or excited 慌作一团；激动起来: Stop flapping -- it's all organized! 一切都已安排妥当，你用不着紧张！