He did not speculate on the future of his tenuous career.

他没有考虑到自己不稳定的职业前景。

《柯林斯英汉双解大词典》

This has led scientists to speculate on the existence of other galaxies.

这就使得科学家推测还有其他星系存在。

《牛津词典》

He refused to speculate on the possible effects on relations between the two governments.

他拒绝猜测这对两国政府关系可能产生的影响。

youdao

Officials have said they cannot speculate on the cause of the crash.

VOA: standard.2010.05.23

Clinton,appearing at the State Department's daily press briefing, said she did not want to speculate on Iran's political future, but she that the reported recount is unlikely to do much to defuse election-related tensions.

VOA: standard.2009.06.29

"Therefore, we don't want to speculate on either the project or project feasibility, " a spokesperson said.

CNN: Can plan to fly Concorde again get off the ground?

Sather wouldn't speculate on them or whether anyone currently employed by the Rangers would be considered.

WSJ: Rangers fire coach John Tortorella

But I don't want to speculate on what the Florida Supreme Court will do.

CNN: Transcript: Gore talks with reporters outside the White House