名词
中文翻译：Unknown
同义词：
['underneath-trading', 'underhand-trading', 'underdog-trading']
例句：
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1. The company's undertrading strategy has been a major factor in its success.
该公司的低层次交易策略一直是其成功的关键因素。
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2. He was undertrading against the odds, but eventually won the bet.
他逆势交易，但最终赢得了赌注。
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3. The underdog team fought hard and ultimately overcame the odds to win the championship.
这支处于劣势的队伍奋力拼搏，最终战胜了一切困难赢得了冠军。