swiftness英 [ˈswɪftnəs]美 [ˈswɪftnəs]网络 迅捷; 快速性; 敏捷性; 迅速性TOEFLBNC.33427 / COCA.25740英英释义nouna rate (usually rapid) at which something happensthe project advanced with gratifying speedSynonym:speedfastness双语例句