词汇	越打越稳
释义	越打越稳 improve gradually
随便看	countablest countable starplus-compactness countable subadditivity countable superadditivity countable symbolic space countable tightness countable to one open mapping countably countably additive countably additive algebra countably additive class countably additive family countably additive function countably additive measure countably additive set function countably base-mesocompact countably cmplete lattice countably compact countably compact set countably compact space countably complete lattice countably comprehensive principle countably infinite countably infinite set countably-infinite set