Freedom can only be realized through real rules. Without rules there exists no freedom. Freedom stays within the limit of rules. It does not mean doing as you like.

同时自由必须通过真正的规则才能得以实现，没有规则就不可能有自由，自由是规则范围内的自由，不是随心所欲。

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In these conditions, players should keep hydrated, as Ultimate Frisbee rules limit the amount of substitutions teams can make in a game.

在这种条件下，运动员需要及时补充水分。极限飞盘的规则限制了替补的人数，替补是由队伍在比赛中决定的。

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According to the rules, however, the daily catch limit is 15 kg of cod and 7 kg of other fish.

然而，按照规定，日捕量限制在15公斤的鳕鱼和7公斤的其它鱼类。

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President Obama is proposing rules to limit the size of banks and the risks they can take.

VOA: special.2010.01.22

And as governments invest heavily in economic stimulus plans, their deficits are expected to soar to about 7.5 percent of gross domestic product - more than twice the limit allowed under EU rules.

VOA: standard.2009.05.04

But to stop money from overseas companies flowing into the American political process would probably take new legislation, at a time when lawmakers have been unable to agree on any sort of tightening of the rules to limit the all-powerful role of big money in politics.

CNN: Indonesian Money Spurs New Look At Finance Rules

The agency's deregulation in June 2003 of America's media-ownership rules (which limit the freedom of firms with public-broadcasting licences to buy other media companies) got partially reversed by Congress (in December 2003), and then put on ice altogether by the courts (in June 2004).

ECONOMIST: Face value

Menlo Park zoning rules limit the size of homes in different areas.

WSJ: Neighbors Try to Decide if They Like Facebook Exec's Modern House