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1·He considers himself an expert.

他认为自己是专家。《牛津词典》

2·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》

3·I don't profess to be an expert in this subject.

我不敢自诩为这方面的专家。《牛津词典》

4·Each of the authors of the tapes is an expert in his field.

这些磁带的每一位作者都是其领域内的专家。《柯林斯英汉双解大词典》

5·An expert with a trained eye will spot the difference immediately.

训练有素、眼光敏锐的专家会马上发现差别所在。《牛津词典》

6·I didn't know anything about elephants, so I asked an expert for help.

我对大象一无所知，所以向一位专家求助。

7·An expert said mobile phone use was a distraction to students during school hours.

一位专家表示，在上课时间使用手机会分散学生的注意力。

8·An expert gives everyone in France a suggestion: simply looking into a person's eyes can be a greeting.

一位专家建议每个在法国的人：简单地看着对方的眼睛也能代表着一种问候。

9·She proclaimed herself an expert.

她自封为专家。《新英汉大辞典》

10·He claims to be an expert in astronomy.

他声称自己是天文学专家。