Pacemakers are expensive. Though some pacemaker manufacturers have dropped the price down to $800 in poorer countries, thats still out of reach for many. One to two million people die each year because they dont have access to this life-saving techno

发表于:2018-12-24 / 阅读(41) / 评论(0) 分类 Scientific American(十)月

While in Korea, Gov. Mike Smith of Utah was relaxing in the VIP lounge the Seoul airport, awaiting his flight to Japan. At the same moment , his press secretary, Jenny Varela, was being told at the ti

发表于:2019-01-03 / 阅读(50) / 评论(0) 分类 英汉幽默故事选读

1. NASA will have to try again tomorrow. Bad weather forced Mission Control to call off today's scheduled launch of Discovery at the last minute. NASA will try again tomorrow but bad weather is still

发表于:2019-01-08 / 阅读(103) / 评论(0) 分类 美联社新闻一分钟2006

This is the VOA Special English Health Report. A pacemaker is a small device that doctors place in people with an abnormal heartbeat. If a heart beats too slowly, the pacemaker will use electrical signals to help set a normal rate. Some devices inclu

发表于:2019-01-11 / 阅读(59) / 评论(0) 分类 2010年VOA慢速英语(六)月

From VOA Learning English, this is SCIENCE IN THE NEWS in Special English. Im Bob Doughty. And Im Faith Lapidus. Today, we tell about a woman who can use signals from her brain to move a robotic arm. We tell about efforts to develop an experimental g

发表于:2019-01-24 / 阅读(34) / 评论(0) 分类 英语语言学习

While in Korea, Gov. Mike Smith of Utah was relaxing in the VIP lounge the Seoul airport, awaiting his flight to Japan. At the same moment , his press secretary, Jenny Varela, was being told at the ticket counter that she had no ticket. After insisti

发表于:2019-01-30 / 阅读(78) / 评论(0) 分类 趣味英语