loyal customer

基本解释

We have been rewarded with an ever-growing, loyal customer base.
我们因此而得益，我们争取到的是不断增长的忠实客户群体。
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Finally, the dynamic characteristic of BtoC customer relationship was belittled, that is to say, the future state of the customer relationship is unsteady, "loyal- customer" may also be "lost".
同时，该理论还忽略了客户关系的动态性，即客户关系的未来状态是不稳定的，“忠诚客户”也有可能会“流失”。
Investigation shows that the cost to attract a new customer is 5 to 10 times more expensive than to maintain a current customer, so a long-time loyal customer is more profitable than a new customer.
然而根据调查，电信运营商吸引一位新客户所花的成本是维持一位现有客户的5至10倍；

Citigroup is now a loyal customer--it contributes over 40% to total revenues--and has renewed its contract with I-flex for another five years.
FORBES: On The Cover/Top Stories
Back then, when Martha the Human Brand was found guilty on all counts, the brand lost a good deal of trust among her then-loyal customer base.
FORBES: Martha Stewart Posts 'For Sale' Sign
This allows independent booksellers with loyal customer bases to advertise and sell Google e-books via their own venues and take an (as of yet undisclosed) cut of the revenue, an opportunity previously denied to them.
FORBES: Google's E-bookstore Has Arrived

忠诚顾客
The goal of relationship marketing in commercial bank is to build up customer loyalty, because 80% of the total profit is come from 20% loyal customer.
商业银行关系营销的目标是建立顾客忠诚,因为企业80%的利润来自于20%的忠诚顾客。