intellectual speculation

例句：

1. 1. The professor's latest paper on the impact of technology on society is a brilliant example of intellectual speculation.
   教授最近关于技术对社会影响的文章是智力投机的杰出例子。
2. 2. The scientist's theory about the origins of life on other planets is an intellectual speculation that has sparked muchdebate.
   科学家关于其他行星上生命起源的理论是一个引起广泛辩论的智力投机观点。
3. 3. The economist's hypothesis about the causes of economic downturns is another example of intellectual speculation.
   经济学家关于经济衰退原因的假设是另一个智力投机的例子。