借由焦点团体来设计产品是非常困难的。
焦点团体怎样能如此精确地锁定他们感到恐惧的确切时刻?
How can any focus group be that exact in locking down the exact moment that they felt fear?
通过访谈主题发表、焦点团体和看着数据…”和“漫步”。
Subjects addressed by means of interviews, focus groups and looking at data…and "wandering around" .
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