可数集 countable set ; [数] denumerable set ; countable aggregate ; denumerable aggregate

不可数名词 uncountable noun ; mass noun

可数名词 countable noun ; Count nouns ; noun of discontinuous quantity ; Countable Nouns

不可数集 [数] uncountable set ; uncountable aggregate

可数选择公理 axiom of countable choice ; Countable choice

第一可数空间 first-countable space

可数的 [数] denumerable ; [数] countable ; abzaehlbar countable ; [数] enumerable

不可数 Uncountable

不可数的 [数] uncountable ; noncountable ; non denumerable

生存时日屈指可数 days are numbered