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  • 匿名
关注:1 2013-05-23 12:21

求翻译:对于究竟减排二氧化硫对提高能见度作出了多大贡献是什么意思?

待解决 悬赏分:1 - 离问题结束还有
对于究竟减排二氧化硫对提高能见度作出了多大贡献
问题补充:

  • 匿名
2013-05-23 12:21:38
Whether the emission reduction of sulfur dioxide to improve visibility made much contribution to the
  • 匿名
2013-05-23 12:23:18
What is the sulfur dioxide emission reduction 2 to increase the visibility of what a contribution
  • 匿名
2013-05-23 12:24:58
Actually regarding reduced a row of sulphur dioxide to enhance the visibility to make the big contribution
  • 匿名
2013-05-23 12:26:38
How much contribution to the emissions of sulfur dioxide to improve visibility
  • 匿名
2013-05-23 12:28:18
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