1.enforce v. 强制执行,强行实施(法律或规定)
例句:Match officials should not tolerate such behaviour but instead enforce the laws of the game.
赛事官员不应纵容这种行为,而应严格执行比赛规则 。
2.off limits 不得从事的;禁止使用(或拥有)的
例句:These establishments are off limits to ordinary citizens.
这些建筑禁止普通公民入内 。