{
    "年龄": 30,
    "汽车": [
        {
            "型号": "BMW 230",
            "每加仑英里数": 27.5
        },
        {
            "型号": "Ford Edge",
            "每加仑英里数": 24.1
        }
    ],
    "子女": [
        "Ann",
        "Billy"
    ],
    "已离婚": false,
    "已婚": true,
    "姓名": "John",
    "宠物": null
}