1. 行家;专家
    An expert is a person who is very skilled at doing something or who knows a lot about a particular subject.

    e.g. Our team of experts will be on hand to offer help and advice between 12 noon and 7pm daily.
           每天中午12点到下午7点，我们的专家小组将随时提供帮助和建议。
    e.g. ...a yoga expert.
           瑜伽大师

2. 技术娴熟的;熟练的;在行的
    Someone who is expert at doing something is very skilled at it.

    e.g. The Japanese are expert at lowering manufacturing costs...
           日本人在降低制造成本方面很在行。
    e.g. There is a great deal to learn from Hal's expert approach.
           从哈尔熟练的方法中可以学到很多。

3. 行家的;内行的
    If you say that someone has expert hands or an expert eye, you mean that they are very skilful or experienced in using their hands or eyes for a particular purpose.

expert是什么意思

    e.g. When the horse suffered a back injury Harvey cured it with his own expert hands...
           那匹马背部受伤后，哈维用他内行的双手把它治好了。
    e.g. The symptoms are very mild and it takes an expert eye to see them.
           症状非常轻，要靠专家的眼睛才能看出来。

4. 专业的;专家的
    Expert advice or help is given by someone who has studied a subject thoroughly or who is very skilled at a particular job.

    e.g. You'll also get expert advice on keeping your hair in good condition...
           你还会获得有关如何保持良好发质的专家建议。
    e.g. We'll need an expert opinion...
           我们需要听听专家的意见。