Sigma electrons
[化] σ电子
🧩 词语组成解析
[计] 求和\\n[医] σ(希腊文第十八个字母)
n. 电子( electron的复数形式 )
🗣️ 情景例句
Would you mind opening your suitcase?
请把您的箱子打开，好吗？
Slow as molasses.
慢吞吞的！
It has sailed across the Atlantic many times.
它已经多次横渡大西洋。