Bond order
[化] 键级
🧩 词语组成解析
order
['ɔ:də]
n. 命令;秩序;规则，制度;次序;
vt. 命令;订购;整理;
vi. 下订单;
🗣️ 情景例句
But I promise you, Alexandra,
但是我向你保证，Alexandra，
There's something wrong with the phone.
电话出了点儿毛病。
It is thought that they arrived more than 30,000 years ago by crossing a land bridge from Asia to America.
他们被认为是在3万多年以前从亚洲跨越一座陆桥来到美洲的。