求翻译：我觉得做销售得考人的心理，但也考科学销售：你得科学客观的了解客户心态、市场走向、对手的信息……它们允许有小偏差，但不能有误差。获得信息越准确，成功几率越高，销售成绩越好。但做这些的大前提，就是你得懂行，也就是知己，知道自己手里的牌什么特点，长在哪里，短在哪里。在销售中，把握人脉很重要，你的关系网很有可能就是你将来的销售网。“不要放弃任何一个你可以记录的电话”。营销很考验人，也很锻炼人，它能磨练最好的人才，我想不怕苦，也是它的基本要求之一。是什么意思？

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I think that the people making sales is the psychological, but also the scientific sales: you'll have scientific and objective understanding of the customer mentality, market orientation, your opponent's Information ... they allow a small deviation, but no error. The more accurate information, the h

正在翻译，请等待...

I think the psychological study of the sales people, but also study science sales: you have scientific objective understanding of customers, market trends, competitor information of sth They allowed a small deviation, but there should be no error. Access to information more accurate, higher the chan