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单词	arc cosine
释义	arc cosine noun (ˌ)är(k)-ˈkō-ˌsīn  variants or arccosine plural arc cosines or arccosines : the inverse function of the cosine if y is the cosine of θ, then θ is the arccosine of y —abbreviation arccos Word History First Known Use circa 1884, in the meaning defined above
随便看	sleaves sleaving sleaze sleaze factor sleazebag sleazebags sleazeball sleazeballs sleazes sleazier sleaziest sleazilier sleaziliest sleazily sleaziness sleazinesses sleazo sleazoid sleazoids sleazy sled sled corrugator sled cultivator sled dog sled dogs

英语词典包含469781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。