N-COUNT
(尤指某人有控制力、影響力或權利的)領域，范圍，范疇
A domain is a particular field of thought, activity, or interest, especially one over which someone has control, influence, or rights.
例句
...the great experimenters in the domain of art...
藝術領域偉大的實驗者們
This information should be in the public domain.
這一消息應該為公眾所知。