Food Chain
食物链
The food chain is a natural system.
食物链是自然系统uZv656zUJkmDR。
The first level of the food chain consists of plants.
食物链的第一级由植物组成l9OAXBEzT&3^HY(。
These plants are major food for grass-eating animals.
这些植物是食草动物的主食%2(Z1mv!zDi;xU-4p。
These grass-eating animals are the second level of the food chain.
而这些食草动物是食物链的第二级EidY;Td&;,S2Tto2q。

Grass-eating animals are cows, deer, horses and so on.
食草动物就是奶牛啊、鹿啊、马啊等动物OTQg%NI%0sb&w。
These animals are food for tigers, lions and cheetahs.
它们又是老虎、狮子和猎豹的食物P*qd9J+Q@TW)VOw(r。
These animals are the final level of the food chain.
这些动物处于食物链的顶端1bCT#KjZU+huu@d5f1u。