他在接受卫报采访时表示：“全世界都在对银行业进行重新规范，但粮食市场仍严重暴露在指数基金流入商品交易所的短期资金所带来的投机风险之中。
The banking sector is in the process of being re-regulated worldwide, but the food market remains seriously exposed to short-term flows of indexed funds into commodity exchanges.
面对这一局面，交易所纷纷提高交易保证金，或是取消单边交易手续费的优惠来防止投机。
Under this situation, the exchange markets all increase the margin deposits or cancel the discounts for unilateral transaction fees to prevent speculations.
但是，中国比特币交易所的大量交易——很多是通过自动软件进行的——表明，大部分价格浮动是投机者下注的结果。
But the heavy trading on Chinese Bitcoin exchanges, much of it by automated software, suggests that most of the price movement is a result of bets by speculators.
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