PRS
📖 中文释义
🧩 词形变化
原形 pr
📘 English Definition（英文释义）
- 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