theoretical

1. ADJ 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. 理論的

...theoretical physics. …理論物理。

2. ADJ 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. 理論上的

This is certainly a theoretical risk but in practice there is seldom a problem. 這在理論上肯定有風險，但在實踐中卻很少出問題。