vi.
沉思,思索,考虑(about, on, upon):
This is the method that we have been speculating about.
这正是我们一直在思考的方法。
推测,猜测 (about,on):
No one can speculate on what he's thinking about.
没人知道他在想什么。
做投机生意；投机：
to speculate on the futures
搞期货投机生意
vt.
推测，猜测：
to speculate one's intention
猜测某人的意图
It is speculated that the murder was done by the international narcotics ring.
据推测这次暗杀事件系国际贩毒集团所为。
怀疑；设想：
No man speculates he would win the game.
每个人都相信他将取得比赛的胜利。
观察(天体等)
在风险企业中投入(资金)
[废语]思考，考虑；研究
近义词:
think
变形：
vi.
speculated
. speculating