Didym
n. = didymium
🗣️ 情景例句
Welcome aboard, Malcolm!
欢迎加入， Malcolm
What do you plan to do tomorrow?
你计划明天做什么？
He has been able to tell us more about active volcanoes than any man alive.
他能告诉我们的有关活火山的情况比任何在世的人都要多。