平台原始字段（来自 API 响应或 CSV 导入）：
{
"add_time": "2024-09-04 16:24:51",
"barcode": "",
"biz_type": 3,
"cates": [
{
"cate_id": 151082994,
"cate_name": "自然童伴",
"sort_num": 14
}
],
"chain_store_sync": false,
"cost_price": "",
"fx": 0,
"fx_fee_rate": "0.0",
"h5Url": "https://weidian.com/item.html?itemID=7267216999",
"imgs": [
"https://si.geilicdn.com/pcitem1790250396-34f500000191bc0395760a2395d6-unadjust_809_606.png?w=480&h=480&cp=1"
],
"istop": 0,
"item_desc": "2024闵行区“全国科普日” 活动——上海闵行优质稻米（粳米）科技小院“稻米科普小课堂”",
"item_name": "2024闵行区“全国科普日” 活动——上海闵行优质稻米（粳米）科技小院“稻米科普小课堂”",
"item_simple_name": "三冈水长研之有稻活动一稻米之旅",
"itemid": "7267216999",
"merchant_code": "",
"price": "20.00",
"self_create": true,
"seller_id": "1867168977",
"skus": [
{
"attr_ids": "3",
"buy_stock": 0,
"csku_id": "",
"dur_time": "",
"id": 124250207497,
"img": "",
"item_id": 7267216999,
"price": "20.0",
"skuType": 2,
"sku_merchant_code": "",
"status": 1,
"stock": 1450,
"sup_id": "",
"sup_price": "",
"title": "观展+科普小课堂“水稻的一生”（10:00-10:30）"
},
{
"attr_ids": "4",
"buy_stock": 0,
"csku_id": "",
"dur_time": "",
"id": 124250207499,
"img": "",
"item_id": 7267216999,
"price": "30.0",
"skuType": 2,
"sku_merchant_code": "",
"status": 1,
"stock": 1450,
"sup_id": "",
"sup_price": "",
"title": "观展+科普小课堂“田间保卫战”（11:00-11:30）"
},
{
"attr_ids": "5",
"buy_stock": 0,
"csku_id": "",
"dur_time": "",
"id": 124250371498,
"img": "",
"item_id": 7267216999,
"price": "40.0",
"skuType": 2,
"sku_merchant_code": "",
"status": 1,
"stock": 1450,
"sup_id": "",
"sup_price": "",
"title": "观展+科普小课堂“Rice手指饼干”（14:00-14:40）"
}
],
"sold": 0,
"status": 1,
"stock": 0,
"thumb_imgs": [
"https://si.geilicdn.com/pcitem1790250396-34f500000191bc0395760a2395d6-unadjust_809_606.png?w=110&h=110&cp=1"
],
"tiaohuo_item": false,
"update_time": "2024-10-09 00:41:41"
}