胡佛大坝长期作为内华达州和亚利桑那州主要的交通连接处，虽然卡车已经禁止通行，但是大坝依然面临恐怖袭击的威胁。
Having long been the most accessible river crossing between Nevada and Arizona, the dam is thought to be at risk of a terror strike, with trucks already banned from crossing.
卡车、大吨位的交通工具以及任何载有危险化学物品的车辆都禁止通行。
To begin with lorries, vehicles with large loads and anything carrying dangerous chemicals will be banned.
卡车、大吨位的交通工具以及任何载有危险化学物品的车辆都禁止通行。
To begin with lorries, vehicles with large loads and anything carrying dangerous chemicals will be banned.
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