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中国大柱山隧道，耗资高达3000亿，代价高昂究竟有啥意义？
如今中国大柱山隧道的贯通，直接引发了全球的关注，要知道这项工程总共耗资高达3000亿，欧美实在不明白，中国为啥花3000亿挖一山洞？而且面临极其困难的施工环境，代价高昂究竟有啥意义？
霹雳火防务923/1074
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