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The 80-20 rule helps explain how and why planners target their market as tightly as possible.
20规则解释了策划者怎么样和为什么要尽可能牢牢地锁定他们的目标市场.
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2、
The 80-20 rule helps explain how and why planners target their market as tightly as possible.
80-20规则解释了策划者怎么样和为什么要尽可能牢牢地锁定他们的目标市场.
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