preempt 过去式:preempted 过去分词:preempted 现在进行时:preempting 词形变化: 形容词: preemptory | 异体字: pre-empt | 名词: preemptor | 动词过去式: preempted | 动词过去分词: preempted | 动词现在分词: preempting | 动词第三人称单数: preempts |