1. adaptive cruise control：自适应巡航控制2. driver assistance technology：驾驶辅助技术3. set a maximum speed：设定最高车速4. sense traffic：感知交通状况5. fight phantom jams：缓解幽灵堵车6. a number of factors：若干因素7. poorly designed：设计不佳的8. make problems worse：使问题恶化9. save...cost：节省……成本10. computer models：计算机模型
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