英语词汇“second category”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	second category
释义	second category second category [′sek·ənd ′kad·ə‚gȯr·ē] (mathematics) A set is of second category if it cannot be expressed as a countable union of nowhere dense sets.
随便看	laico laicp la-icp-ms laics laics-nlp laicu laid laida laid about laid a charge laid a charge against laid a finger on laid a guilt trip on laid a guilt trip on her laid a guilt trip on him laid a guilt trip on me laid a guilt trip on one laid a guilt trip on them laid a guilt trip on us laid a guilt trip on you laid a heavy trip on laid a heavy trip on her laid a heavy trip on him laid a heavy trip on me laid a heavy trip on one

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。