英[prə'trækʃən]美[proʊ'trækʃən] n. 延伸；伸长；制图 中文 双解 英英 词法 noun(名词) 延长，拖延 noun(名词) the state of lasting for a long time or being made to last longer than necessary延长，拖延 n.the consequence of being lengthened in duration同义词：lengthiness / prolongation / continuationthe act of prolonging something同义词：prolongation / perpetuation / lengthening 词态 语态 双解例句 noun(名词) 延长，拖延The unnecessary protraction of the approval process is slowing work on other issues. 审批过程不必要的拖延耽误了有关其他问题的工作。Jury trials often suffer inordinate protraction. 陪审团审判常常拖得太久。 实用短语maxillary protraction前方牵引,上颌前牵引,上颌前方牵引,上颌发育不足dose protraction剂量迁延rear protraction后伸front protraction前伸protraction doseprotraction pattern拖延型式迟滞mandibular protraction appliance下颌前伸矫治器,比较下颌前伸矫治器protraction facemask上颌前方牵引simple protraction单纯前方牵引 同义词extension / pursuit / continuance 同根词词根：