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. (3+)

在存在大量食草動(dòng)物的同時(shí)卻只有少量的水藻花粉囊，這暗示出——但沒能證明——食草動(dòng)物已吞噬了大部分水藻。

難句類型：

插入語

解釋：

本句主語很長，而且謂語suggested與that引導(dǎo)的賓語從句間被插入語but did not prove隔開，造成閱讀障礙。當(dāng)suggest與but did not prove連在一起使用的時(shí)候，其意思不是建議，而是指一種基于主觀臆測的推理，中文翻譯成“暗示”。其英文釋義為：to call to mind by though or association the explosion suggested sabotage。GRE、GMAT及LSAT文章中，常用suggest,but do not prove來描述一種沒有真憑實(shí)據(jù)、可能有問題的理論，然后在后面的敘述中把它否定掉。

意群訓(xùn)練：

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.