单词:
单词: 相关文章
VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Steve Ember. VOICE TWO: And I'm Shirley Griffith. This week, we will tell about evidence that something big struck the planet Jupiter. We will also tell about a long ignored organ in
This is Scientific Americans Sixty-second Science. Im Cynthia Graber. This will just take a minute. Poor old spleen, it never got the recognition it deserved. Until now. Scientists had known that the spleen is part of our immune systems. But it was c
206. The spinal cord operation脊髓手术 spectra-sponge There was a lecture given at a medical school on a spinal cord operation. The professor began: In order to have a speedy but safe operation, one must speculate on the entire spectrum of possib
HARI SREENIVASAN: One factor contributing to poverty, stagnating wages. As this graphic shows, wages adjusted for inflation have been virtually flat for 45 years, but consumer prices have been rising sharply during that same period. For more about th
Leaders 社论 Slowbalisation 全球化速度减缓 A new pattern of world commerce is becoming cleareras are its costs 一种新的世界商业模式正变得越来越清晰其成本也是如此 When America took a protectionist turn two years ago,