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                preempt的音标:preempt的英式发音音标为:[prɪ'empt]preempt的美式发音音标为:[pri'ɛmpt]... 
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                The Clean Water Act expressly provides that it does not preempt more stringent state law.《洁净水法案》明确规定,该法并不先占更为严格的州法律.They do not preempt the land surface that is useful for other purposes.它们不预先占用对其它目的有用的地面.I advised him a... 
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                preempt的第三人称单数(三单)为:preempts... 
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                preempt的现在完成时为:preempted... 
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                vt.先占,取代,先取,先发制人... 
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                preempt的现在进行时为:preempting...