1. Go back for about 10 meters. There is an underpass. 往回走大约10米。那儿有一条地下通道。
2. Don't walk across the street, it's safer to take the underpass. 不要穿越马路，从地下道走比较安全。
3. In this article, author introduces the rationality of selecting Larssen steel sheet pile support in constructing underpass, elaborates the method of design and construction. 本文介绍了地下通道施工中选择拉森钢板桩支护的合理性，并对其设计方法和施工措施进行详细阐述，为今后类似工程施工提供参考。
英英解释
n.
1. an underground tunnel or passage enabling pedestrians to cross a road or railway
