broad gauge
柯林斯词典
1. N a railway track with a greater distance between the lines than the standard gauge of 56 inches (about 1.44 metres) used now by most mainline railway systems 宽轨; 轨距大于56.5英寸的标准轨距，现应用于大多数干线铁路系统中
2. ADJ of, relating to, or denoting a railway having this track (铁路)宽轨的
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