Actinide series
[机] 锕系元素
🧩 词语组成解析
n. [化]锕类
🗣️ 情景例句
What did I do with them?
我把它们放在哪儿了？
Please take your time.
请慢慢来。
I don't think you'll have any difficulty in pushing sales.
我认为你推销时不会有任何困难。