1.The Bien Hoa Air Base in southern Vietnam is contaminated with dioxin from U.S. military actions during the Vietnam War.

越南南部的边和空军基地受到了美国在越南战争期间军事行动中所产生的二噁英的污染。

2.She also joined Vietnamese officials to mark the next step to support Vietnam's efforts to clean up dioxin contamination at Bien Hoa Airbase.

她还与越南官员道，为下步持越南清理比恩霍空军基地二恶英污染的行动做准备。

3.Taking the amount of mercury and arsenic and dioxins and other air toxics out of the atmosphere from coal-fired power plants, that's an amazing victory.

从燃煤电厂中去除大气中的汞、砷、二恶英和其他空气有毒物质，这了不起的胜利。机翻

4.However, environmentalists and the EPA say that PVC production releases dioxins and pollutants, and you could be exposed to them by inhaling polluted air near manufacturing facilities.

然而，环保人士和美国环保署表示，PVC生产会释放二恶英和污染物，你可能会通过吸入生产设施附近的污染空气而接触到它们。