successful farming造句

• A number of successful farming systems have been developed .
  许多有成效的养殖系统已经建立起来。
• They learned that successful farmer organizations can only be created when the farmers themselves feel the need to organize themselves and are committed to working together to make their organization succeed
  他们认识到成功的农民组织只有在农民自身感受到他们需要建立自己的组织并且致力于合作的情况下才能建立起来。