Valence shells
[电] 价层
🧩 词语组成解析
valence
[['veiləns]]
n. 原子价\\n[化] 化合价; 原子价
n. 贝壳（shell的复数）
🗣️ 情景例句
It's called
它的题目是
Sorry to have kept you waiting.
抱歉使你久等了。
He then asked when Mr.Gilbert would be allowed to go home and the doctor told him that he would have to stay in hosptial for another two weeks.
然后他又问吉尔伯特先生什么时候可以回家，医生说他在医院还必须再住上两个星期。