Actinoid
a. 放射线状的\\n[化] 锕系元素; 锕系
🗣️ 情景例句
and I'm giving some thought to a new book on a different subject.
如今我又开始在构想另一本不同题材的新书。
Shame they won't be there.
可惜他们将不在那儿。
no more than one or twofeet thick.
气垫只有一两英尺厚。