All right, so the bonding order, you're correct, should be 2, if we subtract the number of bonding minus anti-bonding electrons and take that in 1/2.

好，你们是对的，键序为，如果我们用成键数,减去反键数除以2。

麻省理工公开课 - 化学原理课程节选

You know, speak even if you're not sure exactly what you're saying is totally correct,

即使你不能确定你讲的内容是否完全正确，你也要开口讲出来，

想学好英语吗？ - SpeakingMax英语口语达人