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

by Jason Marshall In recent articles, weve talked about two methods of calculating average values, the mean and the median, and weve talked about some everyday uses for them such as how to use median averaging to get better photos. But thats not all

发表于:2018-12-07 / 阅读(111) / 评论(0) 分类 数学英语

Pre-Listening Vocabulary switch: move to a different position Wi-Fi: a wireless network that provides Internet connection Bluetooth: a trademarked name for a short-range wireless connection for computerized devices GPS: global positioning system, a s

发表于:2018-12-28 / 阅读(73) / 评论(0) 分类 趣谈英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(十)月

BEIJING, Feb. 19 (Xinhua) -- The People's Bank of China (PBOC) on Tuesday started a 28-day repurchase operation worth 30 billion yuan (4.8 billion U.S. dollars) for the first time since June, according to a statement on its website. A repurchase oper

发表于:2019-02-08 / 阅读(56) / 评论(0) 分类 英语新闻

如果你要暂时逃离这个世界,与世隔绝,暂时不想和熟人接触,你可能会不接电话,不带手机,不上社交网站。通常是因为和恋人分手或者是工作不顺。 今天要介绍的俚语是airplane mode,用来形

发表于:2019-02-09 / 阅读(80) / 评论(0) 分类 美国俚语