KATE McKENNA: no. I "m just not certain what this item refers to."

凯特·麦凯纳：没有。我只是不大清楚这项是指什么。

youdao

I believe this research not only to improve the management level m company distribution center relevance to other logistics and distribution enterprises have certain guidance.

相信本文的研究成果不仅对提高M公司配送中心的管理水平具有实际意义，对其它物流配送企业也有一定的指导意义。

youdao

KATE McKENNA: no. I 'm just not certain what this item refers to.

凯特·麦凯纳：没有。我只是不大清楚这项是指什么。

youdao

I'm not certain it's meaningful, unless you are in the habit of giving your furniture personal names.

我不确定它有意义，除非你们热衷于,给你们的家具起名字。

麻省理工公开课 - 计算机科学及编程导论课程节选

Then again, if you are not certain of something you can say "I'm not sure."

同样的，如果你对于一件事没有把握，你可以说“I'm not sure.”

I'm sure 课堂 - SpeakingMax英语口语达人

I'm not 100% certain how that works.

它怎样运作我并不十分清楚。

耶鲁公开课 - 死亡课程节选

Senator RICHARD LUGAR (Republican, Indiana): I'm not certain what complete victory means.

NPR: Defining 'Complete Victory' in Iraq

I'm not certain that mega rock stardom was really for him.

BBC: Peter Banks: Original Yes guitarist dies aged 65

I'm not certain they're going to be able to pass any legislation this year, though, and the polls are still running heavily against the president's ideas for partial privatization of the system.

NPR: Politics with Ron Elving: Bolton, Iraq