Now,the U.S.government is changing the rules to require airlines to check the no-fly list within two hours after being notified of changes.

VOA: standard.2010.05.06

And when we follow the Aufbau principle, we have to follow two other rules.

当我们遵从奥弗堡原理时，我们还需遵从两个其他的规则。

麻省理工公开课 - 化学原理课程节选

If you followed a diet where you ate less junk food and ate more fruits and vegetables, for example, just those two little rules you would help shift around this balance of sugars in a way that would benefit health.

如果你遵循一个饮食原则,比如,少吃垃圾食品多吃水果和蔬菜,仅仅这么简单的两条,就会在一定程度上帮你调节糖类摄取平衡,这个对健康有好处

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So there are two components integral and inseparable in the concept of holiness: initial assignment of holy status by God and establishment of rules to preserve that holy status, and secondly, actualization of that holiness by humans through the observance of the commandments and rules that mark that thing off as holy.

因此在神圣这一概念中，有两个组成部分,一个是上帝最初形成的神圣状态,和为了保持这个神圣状态而建立的规则制度，第二个是，人们通过遵守戒律,而将神圣现实化到生活中,将神圣的事物标记出来。

耶鲁公开课 - 旧约导论课程节选

So there are two electron configurations in the n equals one shell, if we follow according to the selection rules that we spelled out last day.

如果根据上次课,我们阐明的原子光谱选择定则，我们就会知道在n等于1的那一层,有两种电子图像构型。

麻省理工公开课 - 固态化学导论课程节选

So we have two electrons in our bonding orbital, but because we use the same rules to fill up molecular orbitals as we do atomic orbitals, so the Pauli exclusion principle tells us we can't have more than two electrons per orbital, so we have to go up to our anti-bonding orbital here.

所以在成键轨道上有两个电子，但因为我们用了和原子轨道时,用的相同的规则，所以Pauli不相容原理告诉我们,一个轨道上不能有两个以上的电子，所以我们需要填充到反键轨道上去。

麻省理工公开课 - 化学原理课程节选