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Friday, 23 September 2011

tunnel boring machine , the Second Avenue subway line , New York. 隧道掘進機,第二大道地鐵線,紐約。

Mary Altaffer / AP
Mary Altaffer / AP
PhotoBlog - Boom!! Giant boring machine breaks through subway wall under New York City
http://photoblog.msnbc.msn.com/_news/2011/09/22/7905218-boom-giant-boring-machine-breaks-through-subway-wall-under-new-york-city

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