We recently saw a case where some researchers made the H5N1 avian influenza virus more potent. 我们最近观察到一个案例，发现一些研究员将H5N1禽流感病毒变得更强效。 It already has a 70 percent mortality rate if you get it, but it's ha
President Bush Departs for Europe THE PRESIDENT: Good morning. Im just about to leave for Europe. Im looking forward to my trip. Im looking forward to meeting with our friends and allies. Weve got str
What is nature? It's everything that exists in the world independently of people, such as pants and animals, earth and rocks, and the weather.Now more and more people are focusing on the nature. It is
President Obama: Hello, everybody! Hello, everybody. Welcome to the White House. Michelle and I want to be the first to wish all of you a happy Hanukkah. I figure we've got to be first because we're a
