We have seen the Twin Towers collapse hundreds of times on TV. The steel and glass skyscrapers exploding like a bag of flour, the dust and smoke pluming out across Manhattan.

在电视上，我们曾无数次地看着世贸双塔轰然倒地：这个由钢筋混凝土铸成的摩天大楼如一大包爆炸了的面粉，烟尘滚滚弥漫了整个曼哈顿。

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His hands were covered in plaster dust as he stood beside the rubble, Shouting and weeping as he grabbed the exposed steel rebar of a broken concrete column.

他九岁大的儿子在倒塌的学校中丧生。他紧握着断裂的混凝土柱中露出的钢筋，手上沾满了白灰。

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Among some steel enterprises of our country, the dust removing system have been on operation for many years, there must be some problems more or less, and it affects production and environment nearby.

在国有大中型钢铁企业中，炼铁厂的除尘系统大部分都是运行了多年的系统，或多或少都存在一些问题，影响环境与生产。

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High on a hill overlooking albuquerque the light- brown dust swirls, and a steel skeleton gleams under the sun.

FORBES: Ready for Takeoff

When the dust settles, Shep has hit 17 of 17 steel targets in just 16 seconds.

FORBES: Draw, You Varmint!