speculationn.推测;投机;沉思
spectrumn.系列;幅度;范围;光谱;[科]频谱
speculate inv.投机
speculate on思索, 推测, 猜测
speculate risk投机风险
speculate logic思辨逻辑
Speculate in coffee做咖啡投机买卖
speculate on a rise做多头投机
Speculate in stocks做股票投机
speculate on a fall做空头投机
speculate for a rise[经] 投机买进