theoretically possible 理论上可能的
theoretically speaking 从理论上讲
theoretically correct 理论上正确的
theoretically sound 理论上合理的
theoretically achievable 理论上可实现的
theoretically valid 理论上有效的
A: Is this method effective?
A：这种方法有效吗？
B: Theoretically, yes, but we need to test it first.
B：理论上是的，但我们需要先测试一下。
1) 从理论上讲
2) 按照理论推断地
3) 学术意义上的推测
4) 理论层面地分析
5) 理想条件下地
1. 理论上地；依据理论地。
2. 从学术或推测角度来说。
3. 在理想条件下地。
adverb
1. In a way that relates to theory rather than practice.
Synonym: hypothetically, conceptually
2. According to what is expected from a theory or model.
Synonym: ideally, academically