GRE NO题难句摘录及分析（三）

　　16.Is this a defect，or are the authors working out of，or trying to forge，a different kind of aesthetic?

　　这究竟是一种缺陷呢，或者是否表明，这些作者是在按照一种与众不同的美学体系进行创作，抑或是在试图创立一种与众不同的美学体系?

　　17.Black Fiction surveys a wide variety of novels，bringing to our attention in the process some fascinating and little-known works like James Weldon Johnsons Autobiography of an Ex- Colored Man。

　　《黑人小说》考察了极为广泛的一系列小说，在此过程中让我们注意到了某些引人入胜但却鲜为人知的作品，如詹姆斯。韦尔登。约翰逊的《一个曾经是有色人的自传》。

　　18.Although these molecules allow radiation at visible wavelengths，where most of the energy of sunlight is concentrated，to pass through，they absorb some of the longer-wavelength，infrared emissions radiated from the Earths surface，radiation that would otherwise be transmitted back into space。

　　虽然这些分子允许可见波长的辐射自然表露的情感、思维、以及行动方式。

　　20.A low number of algal cells in the presence of a high number of grazers suggested，but did not prove，that the grazers had removed most of the algae。

　　在存在大量食草动物的同时却只有少量的水藻花粉囊，这暗示出但没能证明食草动物已吞噬了大部分水藻。

　　21.Studies by Hargrave and Geen estimated natural community graz-ing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers。

　　由哈格雷夫和吉恩所进行的研究，对自然条件下的群落食草比例进行了估计，其手段是通过测量出实验室内单独的浮游动物种类的结食比例，然后利用已知的食草动物种群密度，计算出实地状况下的群落食草比例。

　　22.In the periods of peak zooplankton abundance，that is，in the late spring and in the summer，Haney recorded maximum daily com-munity grazing rates，for nutrient-poor lakes and bog lakes，respectively，of 6。6 percent and 114 percent of daily phytoplankton production。

　　在浮游动物数量激增的高峰期，亦即在春季后期以及夏季，哈尼记录了最大程度上的每日群落食草比率，对于营养物不充足的湖和沼泽湖而言，分别为每日浮游植物繁殖量的6。6%和114%。

　　23.The hydrologic cycle，a major topic in this science，is the complete cycle of phenomena through which water passes，beginning as atmospheric water vapor，passing into liquid and solid form as precipitation，thence along and into the ground surface，and finally again returning to the form of atmospheric water vapor by means of evaporation and transpiration。

　　水文循环，作为该学科中的一个主要课题，指的是水所经过的诸现象的整个循环过程，开始时是作为大气中的水蒸气，转而作为雨、雪、露、雹一类的降水量经过液体和固体形态，由此而沿着地层表面分布或进入地层表面，最终通过蒸发和散发作用再度回复到大气水蒸气的形态。

　　24.The historian Frederick J. Turner wrote in the 1890s that the agrarian discontent that had been developing steadily in the United States since about 1870 had been precipitated by the closing of the internal frontiers，historians who studied preindustrial Europe began，for the first time in large numbers，to investigate more of the preindustrial European population than the 2or3 percent who comprised the political and social elite：the kings，generals，judges，nobles，bishops，and local magnates who had hitherto usually filled history books。

　　二十世纪五十年代早期，研究前工业化时代欧洲的史学家，首次以众多的人数，开始调查前工业化时代欧洲人口中的大多数，而非那些构成了政治与社会精英阶层的百分之二或三的人口，即国王、将军、法官、贵族、主教、以及地方上的达官显贵，而正是这部分人一直到那时为止普遍充斥于史学著作。