短语词组用作動詞 (v.)～+副詞speculate casually 碰巧地猜測speculate rashly 輕率地推測speculate shrewdly 精明地猜測speculate theoretically 理論地猜測～+介詞speculate about 關於…思索speculate as to 爲…思索speculate for 〔in〕 投機speculate on 關於…推測短語 返回 speculating