Protactinium
n. 鏷\\n[化] 鏷Pa
?? 醫(yī)學(xué)釋義
釙
??? 情景例句
who have made my stay in the United States so wonderful.
是你們使得我在美國(guó)的生活如此多采多姿。
Please accept my congratulations on your recovery.
請(qǐng)接受我祝賀你康復(fù)。
I took a burning branch from the fire and went to examine the rock.
我從火堆中拿起一根燃著的樹(shù)枝，走過(guò)去檢查那個(gè)巖石。