比较研究白芨多糖 Bletilla striata polysaccharide 原因比较研究 casualcomparativestudy ; causal-comparative study 美洲文化比较研究 BA Comparative American Studies ..
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比较研究白芨多糖 Bletilla striata polysaccharide 原因比较研究 casualcomparativestudy ; causal-comparative study 美洲文化比较研究 BA Comparative American Studies ..
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这也恰恰是在实践中使用它们的原因：研究者多年以来已经明白将完全不治疗跟某种治疗法做比较往往会产生误导的结果。
That is precisely the point of using it in trials: researchers have known for years that comparing treatment against no treatment at all will give a misleading result.
目前已有研究试图把60-70年代的监测数据和现状的进行比较，以期找清原因。
Current research comparing chemical data taken in the 1960s and 1970s with the situation today may clarify things.
马萨诸塞剑桥Broad研究所正在对美国真菌的基因组进行测序，待测序完成后，将该基因组与欧洲真菌的相比较，试图查明美国真菌对蝙蝠如此致命的原因所在。
The genome of the suspect American fungus is currently being sequenced at the Broad Institute in Cambridge, Massachusetts.
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