You must obey the regulations of the game.你必须遵守游戏的规则。
We must abide by the traffic regulations.我们必须遵守交通规则。
The regulation has no application to this particular case.那项规则不适用于这一特定情况。
He drives at the regulation speed.他按规定的速度行车。

［同义词］   decree, dictate