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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. If you get a scratch, your skin can heal itself. But if your car gets scratched, it stays scratched. Scientists at the University of Southern Mississip
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You need to take proper care of your eyes to maintain good eyesight. There are few fundamental rules that have to be done for good eye care. As you know very well that exposure to sun is very bad for the eyes. Similarly, if you use computer for long
美国暂停与俄罗斯的军事合作 WASHINGTON, March 3 (Xinhua) -- The U.S. Defense Department on Monday evening said that it is suspending all military-to-military engagements with Russia because of Moscow's military movement in Ukraine. The su