community automatic exchange

例句：

1. 1. The community-based exchange program has been a great success in improving the local economy.
   基于社区的交换项目在当地经济改善方面取得了巨大成功。
2. 2.Community-supported agriculture is a model that allows farmers to sell their produce directly to consumers, without relying on traditional marketing channels.
   社区支持农业是一种模式，允许农民直接将他们的农产品卖给消费者，而不依赖于传统的营销渠道。
3. 3. Community-driven innovation refers to the process of creating new products or services that are designed to meet theneeds of the community.
   社区驱动的创新是指创造新产品或服务的过程，旨在满足社区的需求。