viaduct
柯林斯词典
1. N-COUNT A viaduct is a long, high bridge that carries a road or a railway across a valley. 高架道路; (架于山谷上的)高架铁路
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1. N-COUNT A viaduct is a long, high bridge that carries a road or a railway across a valley. 高架道路; (架于山谷上的)高架铁路