The conference provided some excellent opportunities for networking and she made some useful business contacts.此次大会提供了极佳的与同行联系的机会，帮她建立了一些有价值的业务关系。I made a lot of useful business contacts at the conference.在这次大会上我建立了不少有用的业务关系。The bank may even waive charges if the customer has a long-standing relationship with the bank.如果客户和银行有长期的业务关系，银行甚至会免收费用。