VOA News 조회 수 57 추천 수 0 2015.01.14 04:49:20
About one third of the world's city dwellers are living in substandard housing, according to the McKinsey Global Institute. But researchers say free plans now available online for building...
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원문출처 : http://www.youtube.com/watch?v=bmLBxUudnVk&feature=youtube_gdata