Electron-shells
(electron-shell 的复数) [物] 电子壳层；[物] 电子壳；[物] 电子层
🧩 词语组成解析
electron
[i'lektrɔn]
n. 电子;
n. 贝壳（shell的复数）
🗣️ 情景例句
All students without exception must take the English examination.
所有学生毫无例外地都必须参加英语考试。
A little is better than none.
聊胜于无。
If I were you, I wouldn't have bought that vase.
如果我是你，我就不买那花瓶。