The aphis is known as the ant's cow, and school children are taught to be intrigued by the conception.

蚂蚁被称为蚂蚁的牛， 学童被教导对这个概念很感兴趣。

Examination shows the under side of the leaves a mass of small green aphis, or plant lice, sucking the sustenance of the leaves and so of the tree.

检查发现叶子的下面有一团小的绿色蚜虫，或植物虱子，吸食树叶和树的营养。