serving as food meaning in English

用作食物的

Its ' long and flexible talons can no longer grab prey which serves as food
它长而灵活的爪子开始老化，无法有效地抓住猎物。
It also provides shelter for juvenile and larvae of most fishes and marine invertebrates and serve as food for some marine lives such as sea urchin and fishes
此外，海草为各种鱼类及海洋无脊椎动物的幼体提供重要的藏身之地，亦为海胆及鱼类等海洋生物提供食物。