v. to believe especially on uncertain or tentative grounds
v. talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
v. invest at a risk
vi. 深思, 推测, 投机
[经] 投机
1. She likes to speculate about what might happen in the future.
她喜欢猜测未来可能发生的事情。
2. Scientists often speculate on the existence of life on other planets.
科学家们经常猜测其他星球上是否存在生命。
3. People love to speculate about the reasons behind his sudden decision.
人们喜欢猜测他突然决定背后的原因。