It is an axiom in the business world that a satisfied customer is the best advertisement.

满意的顾客是最好的广告，这是商界的格言。

《新英汉大辞典》

I was thanked by the satisfied customer.

感到满意的顾客向我致谢。

youdao

A good travel agent knows that a satisfied customer will always come back.

好的旅行社知道顾客满意了就会再来。

youdao

Cohan couldn't produce a single satisfied customer for FORBES, and we were unable to prove or disprove his many claims.

FORBES: Magazine Article

Divorce was notoriously free and easy (Marilyn Monroe was one satisfied customer).

ECONOMIST: Mexico's culture wars

Testimonial from a satisfied customer: "We've tried to create traveling exhibits on our own but haven't come up to their level, " says Carol Valenta, a vice president at the St.

FORBES: From Couture to Critters