The company has withdrawn its controversial advertising campaign.

withdrawn 是动词 withdraw 的过去分词形式。withdraw 由前缀 with-（表示"向后、离开"）和动词 draw（拉、拖）组成，字面意思是"向后拉"，引申为"撤回、撤销、退出"的意思。withdrawn 在这里表示"已经撤回"的动作。