英语词汇“first 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	first category
释义	first category first category [′fərst ′kad·ə‚gȯr·ē] (mathematics) A set is of first category if it is a countable union of nowhere dense sets. A set S is of first category at a point x if there is a neighborhood of x whose intersection with S is of first category.
随便看	break the/a story break the back of break the back of (something) break the back of something break the bank break the bank, to break the barriers break the buck break the code break the codes break the cycle break the deadlock break the fall break the fourth wall break the glass plan break the habit break the habits break the ice break the ice, to computer intelligence computer intelligence group, inc. computer intelligence system computer intelligence through the science of forensics computer interactive reminiscence and conversation aid computer interconnect

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。