Protactinium
n. 镤\\n[化] 镤Pa
🏥 医学释义
钋
🗣️ 情景例句
I was very sad indeed to hear about it.
听了这件事，我的确非常难过。
I'm afraid he will lose your money.
我怕他会浪费你的金钱。
I'm not sure we can use that many.
我怕我们用不了那么多。