Actinium series
[化] 锕系(指89~103号元素)
🧩 词语组成解析
n. 锕\\n[化] 锕Ac
🗣️ 情景例句
I'll drive Susan, dear.
我送Susan ，亲爱的。
Mettle is dangerous in a blind horse.
瞎马鼓勇气，正是危险事。
He then asked when Mr.Gilbert would be allowed to go home and the doctor told him that he would have to stay in hosptial for another two weeks.
然后他又问吉尔伯特先生什么时候可以回家，医生说他在医院还必须再住上两个星期。