市场细分——目标客户群体，了解不懂的市场领域有不同的需求。

Market segment - the group of customers to target, recognizing that different market segments have different needs.

youdao

营销商们能够在顾客群体中建立有意义的区别进而进行细分—我们称之为“可操作的分割”的现象，不幸的是，像这样的容易操作的案例实在稀少。

Unfortunately, easy cases permitting marketers to establish meaningful differences among groups of customers and then to identify them-a phenomenon we call "actionable segmentation" - are rare.

youdao

所以说，为了能够让一个真正成功的广告平台成功，Twitter就不得不细分更小的用户群体，而他们关注的却不是很流行的话题。

So to get a truly successful ad platform going, Twitter will need to identify and target much smaller groups of users who are involved in less popular topics of conversation.

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