[计] 自动更替路径 alternate routing: 备份航路; 更替路由; 更替通路;更替路径选择; 迂回路由选择alternate path routing: 迂回通路选择alternate routing indicator: 迂回路由标志dar dynamic alternate routing: 动态迂回路由multi alternate routing: 多路由方案下载手机词典可随时随地查词查翻译