《偉大工程巡禮:巨大挖掘機 Megastructures: Rock Eaters of Iceland》劇情介紹:
偉大工程巡禮:巨大挖掘機的劇情簡介
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.
偉大工程巡禮:巨大挖掘機的圖片
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