雅思阅读长难句整理(100句)_雅思英语阅读

雅思阅读长难句整理(100句)

　　29. 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。

　　30. Perhaps the fact many of these first studies considered only algae of a size that could be collected in a net , a practice that overlooked the smaller phytoplankton that we now know grazers are most likely to feed on , led to a de-emphasis of the role of grazers in subsequent research. 可能这样一个事实，那就是很多这样的最初的研究只是考虑了那些能够用网捞起来的大小的水藻，这样一个忽视了更小的浮游生物的做法，导致了在接下来的研究中对于捕食者的作用的贬低。

　　31. Studies by Hargrave and Geen estimated natural community grazing 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捕食速率进行了估计，其手段是通过测量出实验室内单独的浮游动物种类的捕食速率，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捕食速率。

　　32. In the periods of peak zooplankton abundance，that is，in the late spring and in the summer， Haney recorded maximum daily community 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%.