theoretical
adj. 理论的；理论上存在的，假设的
例句
It's a theoretical possibility.
这是理论上存在的可能性。
《牛津词典》
The course is essentially theoretical in orientation.
该课程的目标基本上是理论性的。
There was undeniably a strong theoretical dimension to his thinking.
不可否认，他的想法很有理论深度。
《柯林斯英汉双解大词典》
