{
  "id": "garden-demo",
  "title": "花园一刻 · 视频精听体验",
  "subtitle": "入门 · 2 句话 · 4 个表达",
  "description": "功能试听：视频为花朵短片，英文为原创看图描述，并非视频原声字幕。可点击“朗读本句”听浏览器英语朗读。正式精听课需换成有授权的英语原声视频和对应字幕。",
  "video": "assets/flower.mp4",
  "trial": true,
  "source": "视频：MDN interactive-examples / media/cc0-videos/flower.mp4（CC0 测试素材）。字幕与练习：Monica 网站原创体验文本。未使用参考博主的内容。",
  "sentences": [
    {
      "id": "s1",
      "start": 0,
      "end": 2.5,
      "en": "Look at the colorful flowers.",
      "zh": "看看这些色彩鲜艳的花。",
      "terms": [
        {
          "text": "Look at",
          "meaning": "看；看一看",
          "pos": "动词短语",
          "note": "look at 后接你要看的对象。"
        },
        {
          "text": "colorful flowers",
          "meaning": "色彩鲜艳的花",
          "pos": "名词短语",
          "note": "colorful 描述色彩丰富；flowers 是 flower 的复数。"
        }
      ]
    },
    {
      "id": "s2",
      "start": 2.5,
      "end": 5,
      "en": "They move in the wind.",
      "zh": "它们在风中轻轻摇动。",
      "terms": [
        {
          "text": "move",
          "meaning": "移动；摇动",
          "pos": "动词",
          "note": "这里描述花朵随着风摇动。"
        },
        {
          "text": "in the wind",
          "meaning": "在风中",
          "pos": "介词短语",
          "note": "用 in 表示处于某种环境中。"
        }
      ]
    }
  ],
  "exercises": [
    {
      "id": "q1",
      "type": "listening",
      "sentence_id": "s1",
      "prompt": "听朗读，说话者让我们看什么？",
      "options": [
        "Flowers.",
        "Birds.",
        "Trees."
      ],
      "answer": "Flowers.",
      "explanation": "Look at the colorful flowers. 表示看看这些色彩鲜艳的花。功能试听使用浏览器英语朗读。"
    },
    {
      "id": "q2",
      "type": "gap",
      "sentence_id": "s2",
      "prompt": "选择合适的词，完成句子。",
      "before": "They move",
      "after": "the wind.",
      "options": [
        "in",
        "at",
        "on"
      ],
      "answer": "in",
      "explanation": "in the wind 是“在风中”；描述花朵所处的环境。"
    },
    {
      "id": "q3",
      "type": "order",
      "sentence_id": "s1",
      "prompt": "按顺序点击词块，组成完整句子。",
      "tokens": [
        "flowers.",
        "the",
        "Look",
        "colorful",
        "at"
      ],
      "answer": "Look at the colorful flowers.",
      "explanation": "Look at + 对象；颜色形容词 colorful 放在 flowers 前面。"
    },
    {
      "id": "q4",
      "type": "dictation",
      "sentence_id": "s2",
      "prompt": "听本句，写下完整英文句子。",
      "answer": "They move in the wind.",
      "explanation": "They 指前文的 flowers。注意 in the wind 中的 the。大小写与句末标点不影响本题判分。"
    }
  ],
  "demoNarration": true
}