名词
中文翻译：Unknown
同义词：
['trading', 'speculation', 'speculation trading']
例句：
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1. The stockmarket is a great place for arbitrage opportunities.
股票市场是套利机会的好地方。
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2.He was accused of speculating in the stock market.
他被指控在股市进行投机。
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3. The company engaged in speculation trading in the foreign exchange market.
该公司在外汇市场上从事投机交易。