Before the rules of diplomatic precedence were worked out in the early sixteenth century, rival ambassadors often fought for the most honourable seating position at a ceremony.

在16世纪早期外交优先规则制定之前，敌对的大使经常在仪式上争夺最尊贵的座位。

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People called for jury duty at the D.C.Superior Court are asked to watch a video explaining the rules of jury service.

VOA: special.2009.08.31

So this means we can actually calculate this for any molecule that we've drawn the Lewis structure for, because we actually do need to draw the Lewis structure before we know, for example, how many of each of these we have, or at least go through the rules.

这意味着我们可以将原来画过,路易斯结构的分子的形式电荷计算出来，因为我们其实在画出,路易斯结构之后才能知道，比如，这些量的值是多少，或者至少我们需要经过前面的那些步骤。

麻省理工公开课 - 化学原理课程节选

People to this day are looking for a theory of everything. And there is something very appealing about the notion that the rules that govern the motion of heavenly bodies might be applicable down at atomic dimensions.

现在人们总想寻求一些,可以阐明一切的理论,而这里正好有一些,可以吸引这种想法的东西,即支配天体运动的规则,可能对原子的尺寸也是适用的。

麻省理工公开课 - 固态化学导论课程节选

The regulator said that Npower's breach of the rules was "at the lower end of seriousness".

BBC: Npower fined for abandoned calls by Ofcom

And it was clear that the visitors were keen to arrest their slide by any means possible - stretching the rules of engagement at times as they clattered into challenges.

BBC: CHOOSE A SPORT

This was the most recent in a string of changes the Bush administration has made to the Clean Air Act rules at the request of industry.

NPR: EPA Proposal Eases Rules on Pollution Controls