Then again, these counterfactuals are never so simple.
再次，反设事实从不简单。
2
It is not possible to get deeply engaged in a discussion of counterfactuals here.
这里不可能更深的参与一种对反事实的讨论。
3
As college students have changed a lot in terms of consciousness, it is necessary for counterfactuals to be applied to class-based teaching for college English.