要想真正的了解消费者的需求，你必须要掌握一切相关资料，包括一手和二手资料。
To really understand the needs of the consumers, you must master all relevant information, including primary and secondary data.
要想真正的了解消费者的需求，你必须要掌握一切相关资料，包括一手和二手资料。
To really understand the needs of the consumers, you must master all relevant information, including primary and secondary data.
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