单词：peripheral electron
peripheral electron的用法和样例：
例句
- The outermost electron is shielded from the nucleus.原子核对最外层电子的作用受到屏蔽。
- An ion is an atom that, through electron transference, has lost or gained electrons in its outer shell.离子就是经过电子转移而失去或获得外层电子的原子。
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