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We employ an expert to advise on new technology.

我们聘用了一位专家担任新技术顾问。

《牛津词典》

The good news is, you don't have to be a tree expert to take part.

好消息是，你不需要成为树木专家就能参与。

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The important thing,says one expert, is to find the right tree for the right place for the right use.

VOA: special.2009.09.01

They seem to talk about it in their own terms, which to a public finance expert is, I don't know, very populist or unprofessional.

他们似乎在用各自的术语表达“风险管理，这也许对于一个财政专家来说，听起来很平民化或者很不专业。

耶鲁公开课 - 金融市场课程节选

As an expert in teaching, could you give us some advice on how best to study a language?

作为一名教育专家，关于怎样才是学习语言的最佳方式，你能给我们一些建议吗？

要继续努力 - SpeakingMax英语口语达人

The actively managed fund uses an expert to pick stocks and that is appealing.

FORBES: Why is so Little Money Invested in Index Funds

It is common for western expert to base its viewpoint and prediction on western media reports.

FORBES: U.S.-Japan Security Alliance Is Obsolete Leaving Japan Caught between China and the U.S. in a New Asian Order

The new administration recently appointed a statistical sampling expert to be the next census director.

CNN: Commentary: GOP wants a census we can count on