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You're constantly buying and selling as well as monitoring the trading activity of other competitors.
你必须得不断的买进和出售并且观察其他竞争对手的交易状况.
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英汉双解词典包含4367426条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。