出国留学网英语栏目为您带来“双语阅读：英语已经阻碍了科研的步伐”，希望对大家有所帮助! Thirteen years ago, a deadly strain of avian flu known as H5N1 was tearing through Asia's bird populations. In January 2004, Chinese scientists reported that pigs too had become infected with the virus—an ...