Hedge funds have placed one of their largest ever bets on a rally in oil prices, just as evidence mounts that energy companies are hunkering down for a delayed recovery.
對沖基金紛紛押注于油價上漲，規模已達到創紀錄水品。而越來越的證據顯示，能源企業則認為油價反彈將姍姍來遲。
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