北京奥运28大项 参与,竞争,分享,进步 Athletics 田径 athletics 体育竞技运动,田径运动 track 痕迹,路径 径赛 track events 径赛项目 field 运动场地,比赛场地 / 田赛 field events 田赛项目 track and field athletics 田径赛,田径运动 MEASUREMENTS 丈量 For

发表于:2018-12-05 / 阅读(68) / 评论(0) 分类 奥运28大项比赛

This is Scientific Americans 60 Second Science, I am Sophie Bushwick, got a minute. Kindles, Nooks and other e-readers catch flack for threatening the future of printed books. But reading itself may get a boost from the devices. For example, a study

发表于:2018-12-24 / 阅读(68) / 评论(0) 分类 Scientific American(三)月

1. barometer /bəˈrɔmitə/ -- instrument for measuring atmospheric pressure as an aid in determining probable weather changes When the barometer indicates a rapid drop in air pressure, it means a storm is coming. 气压计显示出气压快速下降时

发表于:2018-12-30 / 阅读(62) / 评论(0) 分类 突破英文词汇

EXPLORATIONS -April 3, 2002: Spacesuit History By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we tell a

发表于:2019-01-04 / 阅读(62) / 评论(0) 分类 Explorations

The study of a solar-powered blood pressure monitor finds it can be an effective tool in places where electricity and even batteries can be in short supply. A study in Africa found the monitors to be affordable and accurate. High blood pressure is a

发表于:2019-01-14 / 阅读(53) / 评论(0) 分类 VOA标准英语2010年(十一)月

The device is a tiny sensor, implanted through a catheter in the heart's pulmonary artery. The procedure takes just seven minutes. The patient passes a wand over his chest, collecting data on heart pressure. That data is sent electronically to the do

发表于:2019-02-02 / 阅读(51) / 评论(0) 分类 VOA标准英语2010年(六)月