而据专家测算，我们的头向下看的角度迫使我们的脊柱承受了大约60磅的重量。
And according to expert calculations, the Angle at which our big heads look down forces our spine to bear the weight of approximately 60 pounds.
据专家测算呀，要满足全国天气的环境容量要求，二氧化硫排放量要在现有基础上至少削减40%。
According to expert estimates, to meet the requirements of the environmental capacity of the weather, sulfur dioxide emissions should based on the existing at least by 40%.
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