motorcade
noun [ C ] uk/ˈməʊ.tə.keɪd/ us/ˈmoʊ.t̬ɚ.keɪd/
（尤指官方仪式上的）一长列汽车，（汽）车队
a series of cars and other motor vehicles that moves slowly along a road carrying someone important, especially during an official ceremony
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