【简介】感谢网友“雕龙文库”参与投稿，这里小编给大家分享一些，方便大家学习。
we see with our eyes. if we have poor eyesight, it will be difficult to see everything clearly. so its important to take good care of our eyes. its quite unbelievable that an eye ball is the same size as a table tennis ball. in fact the eye ball is like a kind of mirror. we should do eye exercises every day. we also need to have a rest after a long period of reading.
