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. 理论的
adjective [原级]理论的;理论上存在的,假设的
This is certainly a theoretical risk but in practice there is seldom a problem. 这在理论上肯定有风险,但在实践中却很少出问题。
theoretical
“ -al” ⌜ 表示具有某种性质的 - indicating pertaining to or characterized by ~ ⌟