noun 下载 🔗分享 地下通道,人行地道。 A passage that crosses a road, railroad or similar obstacle in a tunnel underneath it. Examples : "To get to school quickly, we used the underpass to cross the busy highway. " 为了更快地到学校,我们走了地下通道,穿过了繁忙的高速公路。 architecture structure way building traffic 与AI对话词汇游戏阅读练习