释义：撞倒；走下坡路；诽谤；（使）虚弱 英英释义： run down n.a concluding summary (as in presenting a case before a law court)同义词：summationsumming uprundownv.trace同义词：check outmove downwardinjure or kill by running over, as with a vehicle同义词：run overuse up all one's strength an