Hybrid cars are good for the environment. But scientists say that they might be bad for pedestrians. Because hybrids are so quiet, it can be hard for walkers to hear them until its too late. Listen to this. [quiet car sound] Thats a Toyota Prius mov

发表于:2019-01-02 / 阅读(106) / 评论(0) 分类 60秒科学

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Farmers fertilize their fields to get the maximum meal from their crops. But the effects of these loads of nitrogen and phosphorous extend beyond the field and past

发表于:2019-01-08 / 阅读(46) / 评论(0) 分类 Scientific American(三)月

SHIRLEY GRIFFITH: Im Shirley Griffith. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. Starting this Friday, the auto industry will show off more than nine hundred of its latest vehicles at the LA Auto Show in Los Angeles, C

发表于:2019-01-12 / 阅读(87) / 评论(0) 分类 2010年VOA慢速英语(十一)月

By Lisa Schlein Geneva 12 September 2007 A new report says the number of species threatened with extinction is escalating. The World Conservation Union, which has just released its Red List of Threatened Species, warns life on Earth will continue to

发表于:2019-01-13 / 阅读(86) / 评论(0) 分类 2007年VOA标准英语(九月)

AGRICULTURE REPORT - Hybrids By Broadcast: Tuesday, June 08, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Since ancient times, farmers have chosen the seeds for the coming

发表于:2019-01-30 / 阅读(69) / 评论(0) 分类 农业与发展

JINAN, May 14 (Xinhua) -- Chinese scientists said Saturday that they have found a new species of giant theropod dinosaur in the eastern province of Shandong. The new species, described as a close relative of Tyrannosaurus rex (T. rex), has been named

发表于:2019-02-05 / 阅读(59) / 评论(0) 分类 英语新闻