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pr.的英文翻译是什么意思，词典释义与在线翻译：
英英释义
名词 pr:
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a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
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a self-governing commonwealth associated with the United States occupying the island of Puerto Rico
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a promotion intended to create goodwill for a person or institution
