cultivate land

例句：

1. 1. The farmers have been cultivating the land for decades.
   农民们已经耕种这片土地几十年了。
2. 2. The gardener is cultivating a variety of flowers in his backyard.
   园丁在他的后院培育着各种花卉。
3. 3. The scientist is cultivating new strains of bacteria to study their effects on the environment.
   科学家正在培育新的细菌菌株，以研究它们对环境的影响。