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1·They are all expert in this field.

他们都是这个领域的行家。《牛津词典》

2·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》

3·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》

4·He claims to be an expert in astronomy.

他声称自己是天文学专家。

5·Karen Paolillo, a wildlife expert in Zimbabwe, saw something surprising.

津巴布韦的野生动物专家凯伦·保利洛却看到了令人惊讶的事情。

6·Cassie, an expert in this field, suggests that the cooperation process within teams must be organized, promoted and managed.

凯西是这一领域的专家，她建议必须组织、促进和管理团队内部的合作进程。

7·The biological anthropologist Christy Turner is an expert in the analysis of changing physical characteristics in human teeth.

生物人类学家克里斯蒂·特纳是分析人类牙齿的物理特性变化的专家。

8·It's them or us, says Michael Massimi, an expert in this field.

这一领域的专家迈克尔·马西斯米表示：“要么是他们，要么是我们。”

9·There should be more safety training at schools in our country, said Xu Jiannong, an education expert in Beijing.

北京教育专家徐建农表示：“我们国家的学校应该进行更多的安全培训。”

10·For one thing, the market is full of eye-catching words such as How to be an Industry's Expert in 5 Hours and 15 Classes to Be a Master of Appreciating (欣赏) Classical Music, which sound like if you pay for it, you are sure to succeed.

一方面，市场被这些吸人眼球的话语充斥着，比如“如何在5小时内成为一个行业的专家”和“十五堂课速成欣赏古典音乐大师”。这些话听起来就像是若你为此付了钱，你便一定会成功一样。