The Rules of Play are what make XP unique.

“游戏规则”确保 XP 的唯一性。

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Following the Rules of Play is Extreme Programming.

遵守“游戏规则”就是极端编程。

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An infraction or a violation of the rules of play.

犯规违反或触犯比赛规则。

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"That helps the sport grow. If we just stayed all our separate little ways, the sport would never get momentum, so it's basically a national movement where we have one governing body kind of governing all the rules so we all play by the same rules."

VOA: standard.2010.08.03

These statistics paint a picture of a more defensively minded league that is less likely to penalize such defensive play when it goes outside the bounds of the rules of play.

FORBES: What Soccer Can Learn From the NFL Referee Lockout

Deloitte says a combination of fair play rules and straitened economic times, which are limiting revenue growth, may see a majority of top flight clubs reporting operating losses rather than profits.

BBC: Premier League club wages climb to new highs

"Under the rules of golf I can play, " Woods said, relieved to have escaped his round still in contention.

WSJ: At the Masters Saturday, A Little Bit Of Everything