laid down the rules.

• 制定法规

laid down the rules.的用法和样例：

例句

1. The government was set up to make laws.
   政府是为制定法规而设立的。
2. One reason regulators can't issue sweeping new rules is that they simply don't have the research to back them up.
   制定法规的官员所以还不能颁布大量的新规则的一个原因，仅仅是因为他们没有对新规则的可行性进行调查证实而已。