Mankind could often not be content just to put up a basic structure, but felt the need, even in such an isolated place, to build with an artistic touch.

人类经常不能满足于仅仅建造基本的结构，而是感到需要建造有艺术格调的建筑，即使是在与世隔绝的地方。

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Method: Compound were isolated by solvent-extraction together with column chromatography and the structure were determined by spectroscopic analysis.

方法：采用溶剂提取和柱层析色谱分离，根据化合物理化性质和光谱数据鉴定其结构。

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In an English Sentence with negative structure, when it is isolated, there appears more than one interpretation or meaning.

在含有否定结构的英语句中，如果是一个孤立的句子，往往会令读者觉得含有多种理解或者有多种意义。

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