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    You only have one pair of eyes, so take care of them. When you're in the sun, wear sunglasses. Sunshine can damage your eyes. When your eyes itch or hurt, don't rub them. Your fingers have germs on them. These can get into your eyes and make you sick. Staring at a computer screen can strain your eyes. You blink (眨眼) your eyes 10 times every minute. But when you stare at something, you only blink two or three times per minute. So remember to blink more. This helps your eyes.