• 英语口语大赢家Topic10:买卖Buying and Selling 妈妈准备买几样蔬菜和肉回家做晚饭,选好以后和店员讨价还价。妈妈的砍价技术如何,我们来看看吧。ListenReadLearnMom:Excuseme,howmuchisthespinage?Vendor:3Yuanperkilogram.Mom:That'stooexpensive.Whataboutthecarr......