听力每日练习 listen 2785 Guaranteed supply

1-- Quality is very important to us. We work to very low tolerance levels. We need to have guaranteed supplies of consistently high quality raw materials. Over the years we've built up very good relationships with our suppliers.
 
2-- Do you have many different suppliers?
 
1-- Yes. There are about fifty names on our approved supplier list, but for raw materials we tend to deal with three local companies.
 
===================================
注解：
 
1.tolerance容忍
2.consistently一贯地
3.supplier供应商
 
===================================
译文：
 
1--质量对我们非常重要。我们工作要求的精度非常高。我们需要确保供应的原料一致保持高质量。这些年来，我们与我们的供货商建立了良好的关系。
2--你们有许多不同供货商吗？
1--是。大约有五十家在我们指定的供应单位名单中，但是对于原料，我们通常向三家当地公司采购。