基本解释n. (鼓的)咚咚声； 旅馆同根派生 rub-a-dub相关词英汉例句用作名词 (n.)A series of short,sharp sounds,as that made by knocking on a door.咚咚声一连串短而尖的声音，例如敲门声。rub-a-dub更多例句