每当需求过剩的时候，最先涨价的总是价格灵活的商品，其中最主要的就是大宗商品。
Whenever excess demand hits, the goods whose prices rise first are ones with flexible prices, of which commodities are the prime example.
北京的农贸市场品种多样，价格灵活， 购买时可随挑选，还可以讨价还价。
In Beijing agricultural products markets offer a varied assortment, at reasonable and negotiable prices.
总结本系统的特点是：加大了电脑组装的价格灵活度，提高了电脑装机diy的配件选择效率。
Summarizes this system characteristic is: Has enlarged the computer assembly price spirit activity, enhanced the fitting DIY choice efficiency which the computer installs equipment.
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