英语词汇30 sec怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	30 sec
释义	Examples: secant (of angle), written sec θ— 正割 US Securities and Exchange Commission (SEC)— 证交会 • 安全与交换委员会 • 美国证券交易委员会
随便看	case Department case depending case depth case design case details case detection case determine cased glass cased-Hole cased-hole case diagnosis case diameter case differs case directed case discussed case discussion case documentation case dragging case drain case drawing cased with case effectively case election case elements case estimate

英汉双解词典包含2273206条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

secant (of angle), written sec θ—