A theoretical study or explanation is based on or uses the ideas and abstract principles that relate to a particular subject, rather than the practical aspects or uses of it.
例句
...theoretical physics.理論物理學(xué)
ADJ
理論上的;推想的
If you describe a situation as a theoretical one, you mean that although it is supposed to be true or to exist in the way stated, it may not in fact be true or exist in that way.
例句
This is certainly a theoretical risk but in practice there is seldom a problem...從理論上講，這肯定是有風(fēng)險(xiǎn)的，可是實(shí)際上很少出問(wèn)題。These fears are purely theoretical.這些擔(dān)憂純粹是臆測(cè)出來(lái)的。
英漢詞典釋義
adj.
理論上的
It's a theoretical matter as well as a practical one.這不僅是個(gè)實(shí)踐問(wèn)題, 也是個(gè)理論問(wèn)題。
理論上存在的；假設(shè)的
It's only a theoretical possibility.這只是一種假設(shè)的可能性。
英英詞典釋義
Adjective
1. concerned primarily with theories or hypotheses rather than practical considerations;
"theoretical science"
2. concerned with theories rather than their practical applications;