音标:['ʌn'kætәlaizd] ;
未催化的, 未受触媒作用的

[00:00.00]What Makes a Teacher 为师之道 [00:04.63]It is customary for adults to forget how hard and dull and long school is. [00:11.85]The learning by memory of all the basic things one must know [00:15.45]is a most incredible and unending effort. [

发表于:2019-01-01 / 阅读(42) / 评论(0) 分类 语言的力量

This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? The 2010 Nobel Prize in Chemistry goes to the University of Delawares Richard Heck, Purdues Ei-ichi Negishi and Hokkaido Universitys Akira Suzuki for their work in develop

发表于:2019-01-08 / 阅读(67) / 评论(0) 分类 Scientific American(十)月