While neither production nor consumption take place, but people are engaged in trade, to buy is to sell and make money from prices fluctuation, which is speculative.
既不生产又不消费，但是从事买卖，买进就是为了卖出，从价差中赚钱，这是投机性的。
The article also analyse the influences of agriculture inputment, macroeconomic policy, natural disaster and grain distribution on grain production fluctuation in China.
文章还进一步分析了农业投入、宏观经济政策、自然灾害和粮食流通对粮食生产波动的影响。
The new concept of balance production is put forward in view of the fluctuation in Luzhou-flavour liquor production.
针对浓香型白酒生产中出现的波动，提出了均衡生产的新概念。
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