to shake in a way that you cannot control, especially because you are very nervous, excited, frightened, etc. （因紧张、激动、惊慌等）颤抖，哆嗦，抖动，战栗
My legs were trembling with fear.
我吓得双腿直发抖。
Her voice trembled with excitement.
她激动得声音颤抖。
He opened the letter with trembling hands.
他双手哆嗦着把信打开。