单词:
单词: 相关文章
When Scotsman Alexander Graham Bell invented the telephone in 1876, it was a revolution in communication. For the first time, people could talk to each other over great distances almost as clearly as if they were in the same room. Nowadays, though, w
新英语口语900句 收音机和电视机 871. What channel did you watch on television last night? 昨天晚上你看电视收的是什么波段? 872. What's on following the news and weather? Do you have a TV guide? 在播完新闻和天气预报
Bladeless Wind Generator Safe for Birds Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. But they can also be deadly to birds and bats. The turbines large blades t
(Probably Not a) Giant Alien Antenna强大的外星人光束 The Earth is studded with telescopes, listening for electromagnetic radiation from the great beyond. And a decade ago, astronomers stumbled upon a mysterious signal: a powerful pulse of rad
Kurt: Turn that radio down! Gloria: No way! Im listening to a simulcast of a performance and its live. Kurt: Is it on campus radio? Gloria: No, its on the public radio station. I finally got good reception after putting this long antenna outside my w