Their life cycle helps man provide himself with a basic food—fish.

鱼类的生命周期使其成为一种人类的基本食物。

youdao

Competition among the species is a continuing cycle in the animal food chain.

在动物的食物链上，不同种群之间的竞争是一个永不停息的循环。

youdao

Women and food cycle technologies;

妇女与食物循环技术；

youdao

Women and food cycle technologies;

妇女与食物循环技术；

youdao