Actinide series
[机] 锕系元素
🧩 词语组成解析
n. [化]锕类
🗣️ 情景例句
He should just about get by in the exam.
他这次考试还能勉强及格。
Yes,it fits perfectly.
是的，合身极了。
I tried losing weight, but nothing worked.
我曾试着减肥，但是毫无效果。