Previous research found that the painful parts of unpleasant sounds appear to be in the middle range of audible frequencies.
先前的研究发现，能够引起不快的声音中那些令人痛苦的部分处在可听频率范围的中间。
By the time Wilson left GM, almost half of all US families fell within the middle range of income. Most were headed not by professionals or executives but by skilled and semi-skilled factory workers.
到威尔逊离开通用汽车的时候，美国几乎一半的家庭都达到了中等收入水平，而多数一家之主并非专业人士或高管，而是技能娴熟和半熟练的工厂工人。
However, to construct the middle-range theory is not only a part of the rational strategy but also a part of the legitimate strategy.
而建构中层理论既是合理化策略的一个组成部分，也是合法化策略的一个组成部分。
Middle-range theories provide a form of theorizing that lies between abstract grand theorizing and theoretical local descriptions.
中层理论提供了一种介于宏大的抽象理论化与局部的理论叙述之间的理论化的方式。
But there is evidence that ct scans for calcium can play a significant role in predicting cardiac deaths and making treatment decisions for the millions of people in the middle-range of coronary risk.
但有证据表明，针对钙化的CT扫描对预测心脏病患的死亡和为数百万处于冠心病中度风险的病人提出治疗方案有着举足轻重的地位。
But there is evidence that ct scans for calcium can play a significant role in predicting cardiac deaths and making treatment decisions for the millions of people in the middle-range of coronary risk.
但有证据表明，针对钙化的CT扫描对预测心脏病患的死亡和为数百万处于冠心病中度风险的病人提出治疗方案有着举足轻重的地位。
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