“肮脏的”的英语？

他们冲下楼梯，来到狭窄、肮脏的街上。They chased down the stairs into the narrow, dirty street.4名候选人将在一场肮脏的竞选中一决高下。Four candidates are slugging it out in a dirty campaign.战争与生俱来就是肮脏的。War is inherently a dirty business....