求翻译：营销的作用是一个有争议的主题。直到 1990 年显然在进行交易成为主要的纪律。愈加地在市场的激烈竞争，越来越多的客户，保留客户探索被当作最重要的任务经理。是什么意思？

The role of marketing is a controversial topic. Until 1990 apparently entering into a transaction to become a major discipline. Even more to the fierce competition in the market, more and more customers, retain customers to explore as the most important task manager.

Marketing's role is a controversial subject. Until 1990 it was clear that the transaction took place as a major discipline. In the increasingly competitive market, more and more of our customers, and retain customers to explore is the most important task manager.

The marketing function is one has the dispute subject.Was carrying on the transaction until 1990 to become the main discipline obviously.Even more in the market steep competition, more and more many customers, the retention customer exploration is treated as most vital duty manager.

Role of marketing is a controversial topic. Until 1990 on trade as a major discipline. Increasingly fierce competition in the market, more and more customers, retain the exploration was deemed the most important customer of the Task Manager.

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