marginal bank

例句：

1. 1.The marginal bank is a small financial institution that provides loans to small businesses.
   边际银行是一家为小型企业提供贷款的金融机构。
2. 2.The marginal bank has been struggling with low interest rates and rising competition.
   边际银行一直面临着低利率和竞争加剧的问题。
3. 3.The marginal bank is looking for ways to improve its services and attract more customers.
   边际银行正在寻找改进服务和吸引客户的方法。