"Impunity is the norm." "The few perpetrators that have been held accountable are the exception to the rule.

VOA: standard.2009.09.12

So, if we're talking about hydrogen, that's our one exception so far to the octet rule.

那么，如果我们讨论的是氢原子，它是目前我们遇到的八隅体规则的唯一例外。

麻省理工公开课 - 化学原理课程节选