a shop should keep a stock of those goods which sell best

问题描述:

a shop should keep a stock of those goods which sell best
先行词是stock还是goods
句子中有stock(货物)为什么还要有goods我觉得有点重复了.不理解

先行词是 goods
整句翻译 商店必须保持卖地好的商品的存货量.
stock在这是存货的意思