unsecured loan

例句：

1. 1. We need to secure a loan for the new project.
   我们需要为新项目获得一笔贷款。
2. 2. The bank offered me an unsecured loan of $50,000.
   银行给了我一笔5万美元的无担保贷款。
3. 3. He applied for an unsecured loan to fund his business venture.
   他申请了一笔无担保贷款来资助他的商业冒险。