短語詞組短語speculate on stocks 有投機(jī)之意;有投機(jī)之意弧丁崗股瞢噶哥拴工莖speculate on a rise 做多頭投機(jī)to speculate on 思索;推測speculate on foreign currencies 炒買炒賣外匯speculate on a fall 做空頭投機(jī) 返回 speculate on