Protactinium
n. 镤\\n[化] 镤Pa
🏥 医学释义
钋
🗣️ 情景例句
She can't sit around and do nothing.
她总不能闲坐着无所事事呀。
Inside the packet is some money.
小红包里装着些钱。
Last Christmas, the circus owner, Jimmy Gates,
去年圣诞节，马戏团老板吉米。