The implied price volatility reflects market participants' uncertainty over how production, demand, and high inventories will be balanced in the upcoming winter heating season.
含蓄的价格浮动反射市场关于生产、需求和高存货怎样的参加者的不确定性在即将来临的冬天取暖季节内将平衡。
Even Goldman Sachs - the most consistently negative voice on copper over the past couple of years - has turned more positive, conceding the 23m-tonne-a-year market will be broadly balanced this year.
甚至过去两年内对铜发表最坚定负面看法的高盛(Goldman Sachs)也变得更为乐观，承认这个每年2300万吨的市场今年将大致达到平衡。
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