卖 mai v. sell 卖东西 maidongxi(sell sth) 卖出去 maichuqu(sell) 拍卖 paimai(auction) 卖点 maidian(highlights of a product ; selling point) v. betray 出卖 chumai(double-cross; betray) 卖国 maiguo(betray one's country) v. exert to the utmost; spare no effort 卖力气 mailiqi(do all one can; do one;s best; spare no effort)