Actinouranium decay series
[化] 锕铀衰变系
🧩 词语组成解析
n. [化]锕铀
🗣️ 情景例句
This is my mother.
这是我母亲。
The student felt very shy as he stood in front of the class.
那个学生站在大家的跟前时，感到非常难为情。
We are standing on the left.
我们站在左面。