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
Right.
对。
Youth looks forward and age backward.
青年人向前看，老年人向后看。
The change between hot and cold temperatures makes the blood move around the shoulder and the damaged parts begin to repair themselves.
冷热交替使肩膀周围的血液循环，受伤的部位开始自己修复。