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MP3下载

https://online2.tingclass.net/lesson/shi0529/0008/8034/7.mp3

https://image.tingclass.net/statics/js/2012

buy-it-now price :直接购买价
community :n.社群
consumer base :消费群
e-commerce :n.电子商务
feedback :n.意见回馈
fraud :n.骗局；诈骗
max out :刷爆
online auction :网络拍卖
place a bid :投标；出价
platform :n.平台
product catalog :产品目录
reserve price :底价
transaction :n.交易
vendor profile :卖家简介