Finally, a note around TTS. On Android TTS is not build into AOSP. [6] Instead you need to have an application that provides TextToSpeechService. On most devices this is usually handled by Google's Speech Recognition & Synthesis app, but that is of course not installed by default on GrapheneOS. There are FOSS apps like Sherpa TTS, but the models they provide only support one language at a time and the app can only load one model at a time. This limitation means Sherpa cannot easily switch between different languages, which is exactly what you need for a translation app. I think espeak NG might work, but I haven't given it a try considering the voice quality.
Lexing: Source → Token stream
，更多细节参见爱思助手下载最新版本
Tries and state machines。业内人士推荐同城约会作为进阶阅读
Венесуэла подписала новые контракты на поставку нефти США08:58，详情可参考搜狗输入法2026