{
  "duration": 18,
  "voice": "macOS Tingting",
  "identity": "本机语音合成的原创教学口播，非真人录音或克隆",
  "segments": [
    {
      "index": 0,
      "start": 0.1,
      "duration": 1.844308,
      "text": "本次练习有三个时间点。",
      "file": "speech-0.aiff"
    },
    {
      "index": 1,
      "start": 2.5,
      "duration": 2.71356,
      "text": "下午两点半，我们从街角书店出发。",
      "file": "speech-1.aiff"
    },
    {
      "index": 2,
      "start": 7.0,
      "duration": 2.248753,
      "text": "三点十分，走到林荫小径。",
      "file": "speech-2.aiff"
    },
    {
      "index": 3,
      "start": 11.5,
      "duration": 2.170612,
      "text": "如果下雨，就改为室内阅读。",
      "file": "speech-3.aiff"
    }
  ]
}