One of the ACMD members to resign was Les King, an expert on Spice.

乐斯·金是 ACMD 辞职的成员之一，他是研究 Spice 的一名专家。

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Charles Boutron is an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France.

查尔斯·布特隆是法国国家科学研究中心的一名专家，研究重金属对环境影响。

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He considers himself an expert on the subject.

他认为自己是这门学科的专家。

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But Chesley Sullenberger is also an expert on air safety, including accident investigations, and even has his own consulting business.

VOA: special.2009.01.30

And so in this law firm, one of these guys is an expert on intellectual property and the other one on fraud or something.

律师事务所也是一样的,有人是知识产权达人,别人可能处理欺诈案件很有经验

耶鲁公开课 - 博弈论课程节选

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 SEC named Charles Ellis , an expert on money management, to found it.

FORBES: Settlement Splurge

When you focus your writing, you can become an expert on your subject and own your niche.

CNN: How to be a travel blogger: The pros share their tips

Harvard Professor Bob Linden is an expert on what the public thinks about health care.

NPR: Obama Pushes Health Care Overhaul