此外，我们要记住许多对冲基金和商品交易顾问基金都曾做空很多商品。
Plus we need to remember that many of the hedge funds and CTAs have been short of many commodities.
商品交易顾问，也叫做管理期货基金，就是靠利用这种现象生存的。
Commodity trading advisers (CTAs), also known as managed futures funds, exist to exploit the phenomenon.
商品交易顾问，也叫做管理期货基金，就是靠利用这种现象生存的。
Commodity trading advisers (CTAs), also known as managed futures funds, exist to exploit the phenomenon.
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