求翻译：　　专卖店中将根据不同项目交易模型为广大网友提供包括购房单、摇号和直接购买等多种购房模式。“竞卖区”是为零散房产产品提供的网上交易专区，目前根据不同项目交易要求提供中国式竞拍、荷兰式竞拍、阶梯团购、暗拍秒杀等四大竞卖模式。是什么意思？

　　Store transaction model for the majority of users based in different projects and direct purchase, including purchase orders, shaking and other purchase mode. "Competitive selling" was for scattered premises products offer online trading zone, according to different transactions requested Chinese auction, Netherlands-auctions, step-group purchase, dark second killed four of the competitive selling mode.