[] the fact that a customer prefers to use a particular shop/store, etc. or continues to buy a particular type of product顾客忠诚◆We send ‘thank-you letters’ to all our clients as a way of strengthening customer loyalty.我们给所有的客户寄感谢信是加强顾客忠诚的一个方法。⨁to build / develop / increase / strengthen customer loyalty建立／培养／增加／加强顾客忠诚