每每打开抽屉,就会闻到一股淡淡的清香。看着那本包着透明书皮的数学日记本,我想起了小学时的数学老师张老师。记得当初,张老师要求我们每天在日记本上写一些对当天所学知识的理解和难点。 Every time you open the drawer, you will smell a faint fragrance. Looking at the math diary wrapped in a transparent cover, I remembered Zhang, a math teacher at elementary school. I remember that at the beginning, Teacher Zhang asked us to write in the diary each day some understanding and difficulties of the knowledge I had learnt that day.