形容词
中文翻译：投机的
同义词：
['speculative', 'speculatively']
例句：
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1. The stock market is highly speculative, and investors should exercise caution.
股市非常投机，投资者应该谨慎行事。
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2. The company's decision to invest in new technology was speculative at best.
该公司投资新技术的决定最多只能算是投机。
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3. The investor's speculation about the stock price was speculative at best.
投资者对股价的猜测最多只能算是投机。