iOS 10 SpeechKit:在部分结果期间需要帮助获取每个单词的时间戳

import Speech

// 创建一个语音识别请求
let recognitionRequest = SFSpeechAudioBufferRecognitionRequest()

// 设置shouldReportPartialResults为true，以获取部分结果
recognitionRequest.shouldReportPartialResults = true

// 创建一个语音识别任务
let recognitionTask = speechRecognizer.recognitionTask(with: recognitionRequest) { (result, error) in
    guard let result = result else {
        // 处理错误
        return
    }
    
    // 获取部分结果
    let partialResult = result.bestTranscription
    
    // 遍历每个单词
    for segment in partialResult.segments {
        let word = segment.substring
        let timestamp = segment.timestamp
        
        // 处理每个单词的时间戳
        print("单词: \(word)，时间戳: \(timestamp)")
    }
}

// 开始录音并进行语音识别
let audioEngine = AVAudioEngine()
let inputNode = audioEngine.inputNode
let recordingFormat = inputNode.outputFormat(forBus: 0)

inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer, time) in
    recognitionRequest.append(buffer)
}

audioEngine.prepare()
try audioEngine.start()