to prepare land and grow crops on it, or to grow a particular crop

Most of the land there is too poor to cultivate. 那里大部分土地太贫瘠，无法耕种。

The villagers cultivate mostly maize and beans. 村民们主要种植玉米和豆类。

to try to develop and improve something

She has cultivated an image as a tough negotiator. 她将自己的形象塑造成一个强硬的谈判者。

If you cultivate a relationship, you make a special effort to establish and develop it, because you think it might be useful to you.

The new prime minister is cultivating relationships with East Asian countries. 新任首相将与东亚国家发展关系。