The script of this programme 本节目台词 A typical day on the streets of Hull Jo: You're listening to On The Town from BBC Learning English. Now today Jean, I thought I would introduce my home town to everyone. Jean: Your home town? Where is that the

发表于:2018-12-19 / 阅读(99) / 评论(0) 分类 都市掠影

Ever get a ringing in your ears after a loud blast of music on your iPod? Thats one example of the usually temporary condition called tinnitus, the sensation of sound even when no sound is being produced. But a new inventioncreated by high school stu

发表于:2018-12-24 / 阅读(87) / 评论(0) 分类 Scientific American(九)月

分集介绍:指数,log,对数微分;双曲函数 Exponential.and.log.Logarithmic.differentiation;.hyperbolic.functions

发表于:2019-01-05 / 阅读(335) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. When we think about how to represent sound visually, most of us probably picture those volume-dependent sine waves. But thats not how John Stuart Reid

发表于:2019-01-08 / 阅读(58) / 评论(0) 分类 Scientific American(一)月

1. Cyber Sickness 晕屏症 Also called digital motion sickness, symptoms that range from headaches to woozy feelings can occur when you quickly scroll on your smart phone or watch action-packed video on your screen. 这种病也被称为数字晕车,

发表于:2019-02-03 / 阅读(541) / 评论(0) 分类 阅读空间

Why Don't Snorers Wake Themselves Up? Anyone who's ever slept in the same room as a loud snorer knows how infuriating it is to have to suffer through all that noise while the offending party remains blissfully oblivious and asleep. Loud snorers can w

发表于:2019-02-04 / 阅读(57) / 评论(0) 分类 阅读空间