·2,447,543篇论文数据，部分数据来源于NoteExpress
French vineyards are often very small and production is quite fragmented, driving up production costs - also reflected in higher prices.
法国葡萄庄园通常很小，产量也不稳定。高生产成本，也就导致了高价位。
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It is actually even more fragmented than that, because most oil production is co-owned by royalty holders who get a percentage of the production.
FORBES: Are Speculators Responsible for Today's Higher Oil Prices?
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