人一辈子要眨多少次眼？

You blink your eyes all day long. 你这一天到晚，眼睛眨个不停。 Most people blink fifteen times a minute. 大多数人，一分钟要眨十几次。 Blinking washes and protects your eyes. 眨眼，是给眼睛洗个澡、润一润。 Now do the math for a whole life. 现在拿一辈子，来算一笔账。 The number comes to hundreds of millions. 算出来，足足有好几亿次。 You blink while you read, talk, and watch. 看书在眨，说话在眨，看手机也在眨。 It is your eyes' quiet way of resting. 这是眼睛在悄悄给自己放假。