仲夏夜，体育馆里举行了摇滚演唱会。雨雪让夏夜里的天空灰沉。他的出现赢得了人群的喝彩声。

At a rock concert in a sports hall on mid-summer eve, as sleet and snowfall and the midnight sky hangs grey, his appearances draws cheers from the crowd.

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介绍了硫化钡黑灰的浸取、黄水(硫化钡溶液)的沉清和污泥处理工艺和设备改进。

The dipping of barium sulphide - black ash, the setting of yellow water (barium sulphide solution) and the treating technology of sludge and the remaking of equipment are introduced.

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或者，即使它们唱，声调那么沉，树叶全变灰了，生怕冬天降临。

Or if they sing, 'tis with so dull a cheer, That leaves look pale, dreading the winter's near.

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或者，即使它们唱，声调那么沉，树叶全变灰了，生怕冬天降临。

Or if they sing, 'tis with so dull a cheer, That leaves look pale, dreading the winter's near.

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