However, considering there are only two regulation subset with active condition as time goes, this will be able to cover all subtasks with pragmatic interest.
然而，考虑到随时间流逝只有两个活性条件的规则子集，这将能够覆盖全部有实用兴趣的子任务。
2
A space X is nearly metacompact if and only if every monotone open cover U has an open refinement that is point-finite on some dense subset of X;