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pre-emption的英文翻译是什么意思，词典释义与在线翻译：
英英释义
Noun:
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the judicial principle asserting the supremacy of federal over state legislation on the same subject
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the right of a government to seize or appropriate something (as property)
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the right to purchase something in advance of others
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a prior appropriation of something;
"the preemption of bandwidth by commercial interests"
