<p>abbr. （英国）皇家学会会长（President of the Royal Society）</p> <p>n a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process<br>n a self-governing commonwealth associated with the United States occupying the island of Puerto Rico<br>n a promotion intended to create goodwill for a person or institution</p> 讯享网
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