1590s, "view mentally, contemplate" (transitive), back-formation from speculation. Also formerly "view as from a watchtower" (1610s). Intransitive sense of "pursue truth by conjecture or thinking" is from 1670s. Meaning "to invest money upon risk for the sake of profit" is from 1785. Related: Speculated; speculating.
中文解释
1. spec (special -- 特别的、特殊的) => 做投机生意需要特别的推测、思索。
实用例句
1. It is premature to speculate about the resumption of negotiations.
现在猜测谈判是否会重新开始还为时过早。来自柯林斯例句
2. People speculate about virtuality systems, but we're already working on it.
人们才开始构思虚拟系统的时候，我们已经进行开发了。来自柯林斯例句
3. It's always hard to speculate about the future.
未来一向很难预测。来自柯林斯例句
4. Well, at present we won't speculate on hypotheticals.
