一个关键字识别器和语法识别器的通用基类。
Phrase recognizer is the smallest speech recognition unit that can be individually started and stopped. Typically, you should create all your phrase recognizers at the start of the Scene, and the start and stop them on demand as needed.
| IsRunning | 判断短语识别器是否在监听短语。 |
| OnPhraseRecognized | 当短语识别器识别短语时触发的事件。 |
| PhraseRecognizedDelegate | OnPhraseRecognized 事件的委托。 |