Burj Khalifa employs a record-breaking 330,000 cubic metres of concrete, 39,000 metric tonnes of steel rebar and 142,000 square metres of glass;and it took 22 million man hours to build.

 
  • 帆船哈利法采用了破纪录的33.;0万立方米混凝土,钢筋39;000和142;000平方米的玻璃吨,并花了2200
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