一ひとつ

import { getVocabById } from 'kotowa';
getVocabById('537f8af3d6'); // 一つ

{
  "id": "537f8af3d6",
  "word": "一つ",
  "reading": "ひとつ",
  "romaji": "hitotsu",
  "meanings": [
    "one"
  ],
  "level": "N5",
  "pos": [
    "num"
  ],
  "jmdict_id": 1160820,
  "examples": [
    {
      "ja": "車にはハンドルが一つある。",
      "furigana": "{車|くるま}にはハンドルが{一|ひと}つある。",
      "en": "A car has one steering wheel.",
      "tatoeba_id": 149093
    },
    {
      "ja": "スーツケースが一つ見つからないんです。",
      "furigana": "スーツケースが{一|ひと}つ{見|み}つからないんです。",
      "en": "One of my suitcases is missing.",
      "tatoeba_id": 215075
    }
  ],
  "zh": {
    "status": "reviewed",
    "source_hash": "1b7aa248dcac0a798111cce0db63a20cd203a8080135f1c1c1b70d5103107ec7",
    "meanings": [
      "一个"
    ],
    "examples": [
      {
        "ja": "車にはハンドルが一つある。",
        "zh": "车有一个方向盘。"
      },
      {
        "ja": "スーツケースが一つ見つからないんです。",
        "zh": "有一个行李箱找不到了。"
      }
    ],
    "references": [
      "upstream vocab/n5/537f8af3d6",
      "Original Chinese authored and reviewed by Codex; no independent human review"
    ],
    "reviewer": "Codex",
    "review_method": "ai",
    "reviewed_at": "2026-10-28",
    "review_hash": "19be1970d2c5918bdfcaedfd027f0fc9872c9f406cf243ae81dad089c02a549f"
  }
}