knees knocking (together)FRIGHTENEDCOLDif your knees are knocking, you are feeling very afraid or very cold 〔因害怕或寒冷而〕双膝颤抖knees knocking (together)• Years later, Ogwen apprenticeship having been served, we began to aspire to their routes, knees knocking at our effrontery.
→ knees knocking (together) at knee1(2)