All of them are experts in their chosen field.

他们在各自选定的专业中都是专家。

《牛津词典》

And there is no lack of computer programs to assist people in solving mathematical problems in their chosen field.

帮助人们解决他们所选领域的数学问题的计算机程序并不缺乏。

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The goal of resident training is to ensure that graduating physicians are competent in their chosen field of medicine.

住院医师培训的目标是确保毕业的医生在自己选择的领域能胜任。

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Scholars form extremely close bonds with each other and often do an internship that gives them hands-on access to experts and practitioners in banking, high tech, conflict resolution or whatever their chosen field of study.

FORBES: Scholarship Program For Future Leaders Gets New Lease On Life

Smith admits that many of the Saltires' largely amateur side will opt to continue in their chosen careers, while still receiving retainer payments for their services on the field under existing agreements.

BBC: Scots & Irish stars could go pro