英语词汇“open ball”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	open ball
释义	open ball open ball [′ō·pən ′bȯl] (mathematics) In a metric space, an open set about a point x which consists of all points that are less than a fixed distance from x.
随便看	help her down help her get a foothold in help her in help her into help her off help her off with help her on help her on with help her out help her out of a fix help her out with help herself help herself to help herself to something help her up help her up from help her with help him along help him back help him back to help him down help him get a foothold in help him in help him into help him off

英语词典包含2567994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。