self-sustaining

The small farm grows its own vegetables and raises chickens, making it self-sustaining.

这个小农场自己种菜、养鸡，因此能够自给自足。

用法提示：此处 self-sustaining 为形容词，表示“自给自足的”，说明农场不依赖外界帮助。

After years of saving, the village built a solar power system that is completely self-sustaining.

经过多年的积蓄，村里建成了完全自给自足的太阳能发电系统。

用法提示：self-sustaining 作形容词，修饰 system，意为“能自我维持的、自立的”。

She wants to become self-sustaining so she doesn't have to depend on her parents for money.

她想变得自立，这样就不必在经济上依赖父母了。

用法提示：self-sustaining 在这里作表语，指“自立的、不依赖他人的”。