abbr. （英国）皇家学会会长（President of the Royal Society）
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
n a self-governing commonwealth associated with the United States occupying the island of Puerto Rico
n a promotion intended to create goodwill for a person or institution
- 原型: pr
英汉双解字典由 ECDICT 提供