Mesothoriumi
[化] 新钍I; 228Ra
🗣️ 情景例句
Give it a try.
试试看。
A good tale is none the worse for being twice told.
好故事百听不厌。
What they had in fact found was a ship which had been sunk many years before.
事实上，他们发现的是另一艘沉没多年的船。