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
Are they always that difficult to make?
领结这样难打吗？
Can I cancel this ticket?
我可以取消这张票吗？
The six students put their closed hands in front of them.
6个学生将握紧的手放在前面。