"feed on"是一个 及物动词短语，通常用来描述生物或系统如何获取其所需的能量或营养。它可以用来描述动物或人类以某种食物为食，也可以用来描述非生物系统如何获取能量或资源。例如：

1. Bats fly at night and feed on insects.

2. I never feed on his promise.

3. Sharks feed on smaller fish.

4. Snails feed on fresh leaves.

5. Birds feed on nuts and berries in the winter.

6. Butterflies feed on the flowers of garden plants.

7. Vampire bats feed on the blood of large birds, cattle, horses, and pigs.

8. These companies feed on customer feedback to improve their products.

根据具体的语境，"feed on"也可以灵活翻译为“以……为食”或“以……为能源”，以准确传达原文的含义。例如，太阳能板“以太阳能为能源”可以转化为电能，就可以翻译为“Solar panels feed on solar energy to convert it into electrical energy”。