Here is a chance for greengrocers to win out over the supermarkets by selling local produce.现在是个机会，蔬果店可通过销售土产胜过超市。When foods from different plant sources are eaten together, deficiency in one is compensated for by sufficiency in another.不同蔬果类食物一起吃的话，在一种中缺乏的营养可以从另一种含量丰富的食物中补充。