prolong /prəˈlɔŋ/ vt. 延长，拉长，拖拉：The treaty has been prolonged for another ten years. 条约延长10年。［考句］If each manager makes his usual speech, the meeting will be prolonged for forty-five minutes. 如果每个经理都做常规发言，那么会议将延长45分钟。