5 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.
5 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.
在食草动物数量很大时，却仅有少量的海藻细胞，这暗示着（但没能证明）是食草动物除掉了大多数水藻。