買空賣空
?fictitious bargain (or transactions);play the market;speculate
? bears and bulls;
(Bear（賣空）指對(duì)某項(xiàng)證券將來價(jià)格看跌，即憑空賣出，希望于交割之日低價(jià)補(bǔ)進(jìn)以賺取差價(jià)利潤。反之，Bull（買空）指對(duì)價(jià)格看漲，即時(shí)買進(jìn)以備在交割日前高價(jià)賣出，從中獲利)
買空賣空mǎi kōnɡ mài kōnɡ
指投資者乘價(jià)格將要上漲時(shí)買進(jìn)，然后再賣出；乘價(jià)格將要下跌時(shí)就賣出，然后再買進(jìn)。多用以指投機(jī)倒把，招搖撞騙等活動(dòng)。speculate in stocks, play the market, buy and sell for naught, fictitious transactions