单词：
单词： 相关文章
material scientists admire spider silk for being lightweight and strong.now another arthropod product is getting into the act insect cuticle,the tough flexible material is inside insect skeleton.researchers at harvard * institute for biological inspi
Scientific American(十二)月
经济学人音频版 Unit5:Leaders-Spain and ETA
经济学人音频版
This is scientific American sixty seconds science. I'm Christopher Intagliata. Got a minute? Worldwide, we know of enough uranium to power today's nuclear reactors for another hundred years according to the nuclear energy agency. But scientists say t
Scientific American(八)月
IN THE NEWS -January 12, 2002: International Monetary Fund By Caty Weaver This is Steve Ember with the VOA Special English program, In the News. A team from the International Monetary Fund completed a
教育与新闻
《Falling Slowing》夺得第80届奥斯卡最佳电影歌曲奖 And won't return And part of me Wants to hide The part that's burned Once, once Knew how to talk to you Once, once But not anymore Hear the sirens call me home Hear the sirens call me
奥斯卡最佳英文歌曲
BOB DOUGHTY: This is SCIENCE IN THE NEWS, a program in VOA Special English. Im Bob Doughty. SHIRLEY GRIFFITH: And Im Shirley Griffith. Today we tell about the development of what scientists are calling a synthetic cell a cell produced by people inste
2010年VOA慢速英语(七)月