In the long semester, the schoolbag is getting fat day by day, and I am getting thinner day by day. In the happy winter and summer vacation, the schoolbag is getting thinner day by day, and I am getting fat day by day. But whether it is the semester or winter and summer vacation, I grow taller day by day.在漫长的学期里， 书包在一天一天地变胖， 我在一天一天地变瘦。 在快乐的寒暑假里， 书包在一天一天的变瘦， 我在一天一天地变胖。 但是无论是学期还是寒暑假， 我都在一天一天的长高。