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
Hi. Michelle,
嗨， Michelle，
Would you please hold the door open for me?
请您为我打开门？
If our educational system were fashioned after its bookless past we would have the most democratic form of 'college'imaginable.
如果我们的教育制度仿效没有书籍的古代教育，我们的学院将具有可以想像得出的最民主的形式了。