we see with our eyes. if we have poor eyesight, it will be difficult to see everything clearly. so it s important to take good care of our eyes. it s 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.
我们用眼睛看。如果我们的视力很差，很难清楚地看到一切。所以重要的是要照顾好我们的眼睛。这是相当令人难以置信的那一球是眼睛大小的乒乓球一样。事实上，眼球就像一种镜子。我们应该每天做眼保健操。我们也需要休息，经过一段长时间的阅读。