17. The one or more computer-readable media of claim 16 , wherein the acts further comprise obtaining geographic information associated with the user device, and wherein the determining the geographic area associated with the user device comprises determining the geographic area based on the geographic information.
17. The one or more computer-readable media of claim 16 , wherein the acts further comprise obtaining geographic information associated with the user device, and wherein the determining the geographic area associated with the user device comprises determining the geographic area based on the geographic information. 18. The one or more computer-readable media of claim 17 , wherein the acts further comprise determining an application operating on the user device, and the determining the phrase comprises determining the phrase when an association degree of the application and the geographic information satisfies a preset association degree condition.