" I've worked in the accounting field for three years" .

" 我在财务领域工作了三年。"

You can talk about the education field, or the accounting field, or the medical field.

你可以谈论教育领域，或者会计领域，或者医学领域。

Most of you will not be in the accounting field, so you can't use this example.

你们中的大多数人不会从事会计领域， 所以您不能使用这个例子。