feed on

动词 feed on:

1. be sustained by
   同义词：feed upon

1. Feeding on plants; plant-eating.
   食草的以食草为生的; 食植物的
2. In flat open country there is plenty of grass for the cattle to feed on.
   在开阔平坦的地区有大量的青草供牛群食用。
3. Bats fly at night and feed on insects.
   蝙蝠在夜间飞行，以昆虫为食。