I don't profess to be an expert in this subject.
我不敢自诩为这方面的专家。
He claims to be an expert in astronomy.
他声称自己是天文学专家。
Independent Russian military expert Alexander Golts says the situation suggests that security in the North Caucasus cannot be tightened further.
VOA: special.2010.04.03
I'll end by telling you that there's a lot of stuff that we'll be talking about, that I want to talk about, that I am not expert in.
最后还要告诉你们,我们还会讲到很多其它的内容,是一些我会讲到的东西,但我并不是那些方面的专家
Pop culture expert Robert Thompson says the changes could be seen in film and television as well.
VOA: special.2009.05.04
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