un. 垂线偏差

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(72) / 评论(0) 分类 数学英语

图片1 图片2 图片3 by Jason Marshall Weve now talked about several different useful ways for looking at and understanding a group of numbers. The mean, median, and mode are great for determining the average value, and last time we learned that t

发表于:2018-12-07 / 阅读(43) / 评论(0) 分类 数学英语

Are you as straight-backed as a ballerina, or as hunched as a dinosaur? 你的后背是像芭蕾舞演员一样直,还是像恐龙的后背那么弯? Your 'posture profile' can identify whether you will suffer from aches and pains in later life,

发表于:2019-01-08 / 阅读(21) / 评论(0) 分类 阅读空间

Charlie Plumb was a US Navy jet pilot in Vietnam. He flew 74 consecutive successful combat missions. However on his 75th mission, his F4Phantom fighter was destroyed by a surface-to-air missile and he was forced to eject. The only thing between him a

发表于:2019-02-13 / 阅读(35) / 评论(0) 分类 英语美文

New Words: lump n.块状;瘤; bump n. 肿块,隆起物; gnarl vi. 咆哮;形成木节 plumb line 铅垂线(等于plumb rule) carpenter n. 木匠,木工 agile adj. 敏捷的;机敏的;活泼的 Huizi once said to Zhuangzi: I have thi

发表于:2019-02-14 / 阅读(36) / 评论(0) 分类 卡卡课堂早餐英语

Everyone hates to wait in lines. We get that gnawing feeling that our precious life is slipping away while were doing something so meaningless. But its not always the length of the wait we find so unbearable. Some people camp outside Apple stores for

发表于:2019-03-04 / 阅读(69) / 评论(0) 分类 中英双语新闻