这三句话怎么翻译，请高人指点
· The interaction between client modules and the CatalogData module is synchronous. Online shoppers who ask to see the catalog wait for the application to display it. To provide a synchronous interaction, you implement this interaction with Java RMI. This means that client modules will request catalog data by calling methods of the CatalogData EJB module.
参考答案:客户组件和 CatalogData 组件之间的交互作用是同时的。 问见到目录等候显示它的申请的在线购物者。 为了提供同时的交互作用，你实现这的互动爪哇 RMI 。 这意谓客户组件将会藉由呼叫 CatalogData EJB 组件的方法请求目录数据