n.余弦；动漫角色扮演；以太网上用服务类别；Certificate of Suitability 指的是欧洲药典适用性认证 英英释义： cos[ kɔs ]n.ratio of the adjacent side to the hypotenuse of a right-angled triangle同义词：cosinelettuce with long dark-green leaves in a loosely packed elongated head同义词：cos lettuceromainero