sold out是什么

sold out是什么 will have been sold out 是什么语法 when were the books sold out the books是什么成分 His bikes have been sold out的被动语态是什么 we were sold out there were sold out we are sold out sell-out 还是 sold-out sold out与sold有什么区别 英文sold out them还是 sold them out sold out ninety-nine是什么意思 sold out的汉意