theorem reason-ing的用法和样例：
例句
- Completely automated theorem provers, such as model checkers, operate on an abstraction of the problem.
象模型检查程序这种完全自动化的定理证明程序是在问题的一个抽象上操作。 - Sometimes the abstraction itself may be so large that the theorem prover may take an inordinate amount of time and resources to complete the proof.
有时抽象本身可能是很大的工作量，以致定理证明程序可能花费过多时间和资源来完成证明。
