To till, as the soil; raise by tillage, as crops.

耕耘(像耕地)；耕种(农作物)。

To improve by care, labor, or study.

修养；琢磨；教化

To foster or promote the growth of, as plants or bacteria.

栽培(植物)；培养(微生物)。

To devote oneself to, as literature.

专心研究(文学等)。

To seek the society of.

试图结交…。