他的研究超出了我的专业领域范围。
His research lies outside my ___sphere of expertise.
她在商业领域拥有丰富的经验。
She has extensive experience in the commercial ___sphere.
有一个非常庞大的团队，每个人都在自己的工作领域内非常出色。
There is a very big crew, all of them very good in their ___sphere of work.
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