相关单词近义词 speculation 推测, sale 出售, truck 卡车, interchange 交换, exchange 交换, transaction 交易, swap 交换, swapping 交换, substitution 代替, tradeoff 交易临近词Tradi, trad, tradational culture, Traditio longa manu, tradional tecnology, Tradctional library, trading cooperative, tradional knowledge, trading association, trading arrangement, trading cooperation, trading certificate相似词trader, tradesman, tradesman's entrance, tradespeople, trading card, trading estate, trading post, tradition, 返回 trading