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伟大工程巡礼:巨大挖掘机:在线播放

伟大工程巡礼:巨大挖掘机剧情介绍

类型:纪录片 /  地区:美国  年份:2006 

In Iceland, a giant tunnel boring machine called 'Jaws' has chewed up nine miles of basalt to aid a hydroelectric project. See the rock cruncher at work as it burrows deep down.