经济学
speculation
Investment and speculation is hard to tell apart.
投机与投资有时很难分辨。
speculative
The stock market,in fact,has evolved to a speculative market.
我国的证券市场实际上已经演变成了一个投机的市场。
speculate
So during the firms hedge in futures markets, they also speculate on the hedging position.
所以,通常企业在套保的过程中,也采用投机手法对已建立的保值头寸进行灵活处理。
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