sources:
  - id: cambridge-official
    title: 剑桥官方 KET/PET 样卷、词表与听力音频
    publisher: Cambridge Assessment English / UCLES
    type: dataset
    url: https://www.cambridgeenglish.org/Images/
    license: official-free
    license_note: "官方免费发布，允许教学使用（样卷/词表/听力音频）"
    fetch_method: manual-download
    status: fetched
    subjects: [ket, pet, fce, english]
    stages: [primary, junior]
    fetched_at: 2026-08-22
    items:
      - id: a2-key-vocab
        title: A2 Key 2020 词汇表 PDF
        oss_key: edu-raw/exams/ket/vocab/cambridge-official/a2-key-vocabulary-list.pdf
        sha256: 2abe174d067cd17ffa061cfc4bbbc0e5a55185ac696a5ef8ba49372c753a3ad6
        size: 544296
        media_type: application/pdf
        fetch_date: 2026-08-22
        status: fetched
        note: "vocab JSONL (structured/exams/ket/vocab/) 由此清洗；待 oss_sync 上传"
      - id: b1-preliminary-vocab
        title: B1 Preliminary 2020 词汇表 PDF
        oss_key: edu-raw/exams/pet/vocab/cambridge-official/b1-preliminary-2020-vocabulary-list.pdf
        sha256: 85b094be8c214e4da6cb710f0b5450a455ae010ccb4064c5578f68ef6aa139ad
        size: 628829
        media_type: application/pdf
        fetch_date: 2026-08-22
        status: fetched
        note: "B1 词表清洗源；直链域名用 cambridgeenglish.cn（.org 已 404）"
      - id: b1-preliminary-vocab-booklet
        title: B1 Preliminary 词汇手册 PDF（含释义/例句，较厚）
        oss_key: edu-raw/exams/pet/vocab/cambridge-official/b1-preliminary-vocabulary-booklet.pdf
        sha256: c4fae109ab5416c7bc68e6686fd9a69abf2428f73e5768ce248d810e612eef20
        size: 8202984
        media_type: application/pdf
        fetch_date: 2026-08-22
        status: fetched
      - id: a2-key-listening
        title: A2 Key 听力音频
        oss_key: edu-raw/exams/ket/audio/cambridge-official/a2-key-listening.mp3
        sha256: f50df0695c23148f0caac3cf059fb9028db6ee467e75b993ebb0e60af2f70654
        size: 11974884
        media_type: audio/mpeg
        fetch_date: 2026-08-22
        status: fetched
      - id: b1-preliminary-listening
        title: B1 Preliminary 听力音频
        oss_key: edu-raw/exams/pet/audio/cambridge-official/b1-preliminary-listening.mp3
        sha256: 8d2cd238fc9b3fe6342467a0f288a98dfb4481c5239d7bd8539f6d9b4bc76090
        size: 26401678
        media_type: audio/mpeg
        fetch_date: 2026-08-22
        status: fetched
      # 样卷：oss_key 必须是具体文件（目录形式无法单文件上传/校验）
      - id: a2-key-sample-tests-zip
        title: A2 Key for Schools 官方样卷包 ZIP
        oss_key: edu-raw/exams/ket/sample_papers/cambridge-official/a2-key-for-schools-sample-tests.zip
        sha256: 349d83c36718e597322588895a5dfce59e319f773263b3a60d96e0650f784e07
        size: 24264467
        media_type: application/zip
        fetch_date: 2026-08-22
        status: fetched
      - id: b1-preliminary-sample-tests-zip
        title: B1 Preliminary for Schools 官方样卷包 ZIP
        oss_key: edu-raw/exams/pet/sample_papers/cambridge-official/b1-preliminary-for-schools-sample-tests.zip
        sha256: 3e11b30226c492d4dab168b60d8607d19131751e4e465e2e5b20e98c217cc077
        size: 23143382
        media_type: application/zip
        fetch_date: 2026-08-22
        status: fetched
      - id: a2-key-handbook
        title: A2 Key for Schools 考官手册 PDF
        oss_key: edu-raw/exams/ket/sample_papers/cambridge-official/a2-key-handbook.pdf
        sha256: ebd74b6103c0a06276c6459f5eb947531b49f365bc4df2d52fc7bec85bbd9f0c
        size: 7860476
        media_type: application/pdf
        fetch_date: 2026-08-22
        status: fetched
      - id: b1-preliminary-handbook
        title: B1 Preliminary for Schools 考官手册 PDF
        oss_key: edu-raw/exams/pet/sample_papers/cambridge-official/b1-preliminary-handbook.pdf
        sha256: fd47cbd4bf647a9188b4e913eafe8a63eb904e4babd7f89fc8abc1ebd47e5d49
        size: 9073455
        media_type: application/pdf
        fetch_date: 2026-08-22
        status: fetched
      - id: score-conversion
        title: 分数换算表 PDF（原始分 → Cambridge Scale）
        oss_key: edu-raw/exams/ket/sample_papers/cambridge-official/score-conversion.pdf
        sha256: 63e371b4f1dc6d51069a443461af3f3811dac5599ce0f879f867e7521f5d9330
        size: 695401
        media_type: application/pdf
        fetch_date: 2026-08-22
        status: fetched