22-06-09 1. 读电话号码通常是以三位数或是四位数为单位连着念的。 如：189-234-5670读作 one eight nine, two three four, five six seven o 2. 可一个数字一个数字的单念，也可以两个数字为一个单位。 如: 1212读作one two one two或者是twelve twelve 3. 两个相同数字相邻，...

14-05-29 An international research team led by Academy Professor Kari Rissanen of the University of Jyvskyl (Finland) and Professor Rainer Herges of the University of Kiel (Germany) has managed to make a triple-Mbius annulene（轮烯） , the most twisted fully...