navigation service的用法和样例：
例句
- Economic forces are reshaping the provision of airports and air navigation services.
经济力量正重塑机场与空中导航服务的组织和操作。 - The second is a navigation service with computing technology, and voice processing technology to provide users with a practical road routes, such as car navigation services.
第二种是导航服务，结合运算处理技术以及语音技术，能够为用户提供切实可行的行进路线，比如车载导航服务。
