1.b> (on, about) (), ( i>); to speculate about the result of the next election ; observers speculated that the authorities wished to improve their image , i> ; we can speculate that the stone circles were used in some sort of pagan ceremony , ;
2.b> (in, on) .i> (), ( .i>); , .i> ; he speculated in stocks ; he likes to speculate on the stock market ;
3.b> .i> i> () / ; i> .