Actinide contraction
[化] 锕系收缩
🧩 词语组成解析
n. [化]锕类
contraction
[kən'trækʃən]
n. 收缩，缩减;[语]缩略，略体，缩写;（开支等）缩减;（分娩时）子宫收缩;
🗣️ 情景例句
If I had a child as cute as Max,
假如我有一个像Max这样可爱的孩子，
To send mail(a letter)
邮寄邮件
I'd like to pick sea shells this afternoon.
今天下午我想去捡贝壳。