小故事:照相机
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童话故事:小公主02
Captain Crewe Miss CreweSaraErmengarde St. John"It will be a great honor to teach such a beautiful child," she said. "Please take good care of her," said Captain Crewe. Captain Crewe held Sara
科学60秒:高科技快递派送小电子
The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, moving indirectly from one end to
科学60秒:透镜效应:揭开古老星系面纱
Five very old galaxies are now known to astrophysicists, thanks to Albert Einstein. A century ago, Einstein predicted an effect called cosmic gravitational lensing. Picture a massive galaxy out i...
断弦的小提琴
短文Playing a Violin with Three Strings On Nov.18,1995, Itzhak Perlman, the violinist, came on stage to give a concert. If you have ever been to a Perlman concert, you know that getting ...