Declining values for farm equipment and land, the collateral against which farmers borrow to get through the harvest season, are going to force many lenders to tighten or deny credit this spring. 这句话该如何翻译呢?特别是中间是非限定从么? collateral 和 which是什么关系?borrow 和get 的宾语分别是谁? 感谢感谢非常感谢!