"It was interesting that there were some differences, and whether those differences are cultural or biological, they" re not quite sure, "said Beletshachew Shiferaw, a lead researcher on the study."

该研究的首席研究员Beletshachew Shiferaw说：“有意思的是，我们从调查中发现了一些差异。但目前还不能确定这些差异是文化上的，还是生物学上的。”

youdao

"Celebrating with our family." "Presents!" "I usually get presents that say Santa Claus on them but I'm not really sure if they're from him."

VOA: special.2009.12.21

Maybe other principles of hermeneutics will place much more stress on innovation or novelty or difference, but you're not sure people can understand unless they share a great deal of common ground."

也许诠释学的其他原则更强调,创新，独树一帜，与众不同，但你不能保证人们都能理解,除非他们有很多相同之处“

耶鲁公开课 - 文学理论导论课程节选

I think they're about 17 and 5 or something like that or somewhere near that, not sure but

他们大概是17胜5负这样子，或者差不多，我不确定但

大学篮球的人气 - SpeakingMax英语口语达人

They're getting a lot back from the sales of DVDs but they're not sure that the money they're spending on advertising is what's accounting for it as opposed to the stars' names on the box or the word of mouth.

NPR: Is Hollywood Wasting Money Selling Movies to Teens?

"The problem is they're not sure when they will get money, " said Steve Kosiak of the Center for Strategic and Budgetary Assessments.

CNN: Pentagon says funding fight affecting war effort

They're not sure that they can trust everybody on a police force, even though they do feel they can trust some of them.

NPR: Political Stability and Personal Security Elusive in Iraq