translation.en: So when a terrorist is corresponding with somebody else who's not known to us but is engaged in doing or supporting terrorist activity, or someone who's violating international sanctions by providing nuclear weapons-related material to a country like Iran or North Korea, is trying to hide that activity because it's illicit activity.
translation.zh: 因此当一名恐怖分子在回应 某个我们不知道的人， 而这人从事或支持恐怖活动， 这人或许违反了国际制裁 提供与核武器相关的材料 给伊朗或朝鲜这样的国家， 正试图隐藏这种活动， 因为它是非法的。