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
No. This is five-two-one double eight three-five.
不，这里是521-8835。
That's track 1 at 9:45.
1轨道，9点45分开。
The children pulled the boat up from the water. Then they started to look around the island.
孩子们把船从水中拉了上来。然后他们开始察看海岛的四周。