单词	pre-emption
释义	pre-emptpre-empt, pre·empt /priˈempt/ verb [transitive] Word Origin WORD ORIGINpreempt Origin: 1800-1900 preemption (17-21 centuries), from Medieval Latin praeemere ‘to buy before’ Verb Table VERB TABLE pre-empt Simple Form Present I, you, we, they pre-empt he, she, it pre-empts Past I, you, he, she, it, we, they pre-empted Present perfect I, you, we, they have pre-empted he, she, it has pre-empted Past perfect I, you, he, she, it, we, they had pre-empted Future I, you, he, she, it, we, they will pre-empt Future perfect I, you, he, she, it, we, they will have pre-empted Continuous Form Present I am pre-empting he, she, it is pre-empting you, we, they are pre-empting Past I, he, she, it was pre-empting you, we, they were pre-empting Present perfect I, you, we, they have been pre-empting he, she, it has been pre-empting Past perfect I, you, he, she, it, we, they had been pre-empting Future I, you, he, she, it, we, they will be pre-empting Future perfect I, you, he, she, it, we, they will have been pre-empting 1to make what someone has planned to do or say unnecessary or ineffective by saying or doing something first:  The deal pre-empted a strike by rail workers.2American English to replace a television show with a special programme or report:  Regular programming was preempted by a report on the war.—pre-emption /-ˈempʃən/ noun [uncountable]
随便看	dead heat dead letter deadline deadlock deadlocked deadly deadly nightshade deadness deadpan Dead Parrot Sketch dead reckoning dead ringer Dead Sea Dead Sea Scrolls deadweight Deadwood dead wood deaf deafen deafening deaf mute deafness deal dealbreaker dealer

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