公司可以购买期货在保证原料价格。
Companies also buy futures to guarantee costs for materials.
自然灾害引致的农产品供给的波动最终会导致农产品价格的波动，但是农场主可以通过购买期货合约和远期合约来对冲掉风险。
Supply fluctuations due to natural disaster create instability in farm prices, but farmers can hedge against such instability by purchasing future or forward contracts.
这份报告会在今天开市时刺激玉米期货的一些购买行为。
This report could spur some buying in corn futures when the market opens today.
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