英语词汇sec a, b, c1, c2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	sec a, b, c1, c2
释义	Examples: secant (of angle), written sec θ— 正割 US Securities and Exchange Commission (SEC)— 美国证券交易委员会 • 安全与交换委员会 • 证交会
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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—