Actinide series
[机] 锕系元素
🧩 词语组成解析
n. [化]锕类
🗣️ 情景例句
We're going to take it slow first.
开头我们要做慢一点。
What will the weather be like tomorrow?
天气将象明天一样吗？
Where are you from?
你从哪儿来的？