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	pain sore Pain specialist pain spread painstaking painstaking analysis painstaking attention painstaking care painstaking craftsmanship painstaking detail painstaking effort painstaking efforts painstaking job painstakingly painstakingly applied painstakingly manufactured painstakingly restored painstakingly restored painstakingness painstaking process painstaking research painstaking search painstaking selection painstaking work pain stimulus pains to ensure

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—