很高兴为你解答。 Our city is a big cities in the north, but compared to the development of market economy and the southern coastal city, the gap is still large.Not only economically backward, and old ideas.Blood relation is the city traffic, city's economic development is important basic concept has not yet fully formed in the city.Therefore, it is suggested that the city through the conference, the traffic in our city it clear to the people in the city and closely related to the economic development, change some departments and units that traffic development and traffic management and the idea of irrelevant or insignificant. 其中有两个句子是借助翻译工具的，其他都是手工翻译。 希望能帮上你，谢谢

我有一个美丽的学校。学校里有30个班级。我们教室里有一块黑板，黑板前面有一张讲台。我们班共有43名学生。24个女生，19个男生。学校里有一个庭院、一个操场、一个图书馆。有时我会去庭院里玩耍，去操场上跑步，去图书馆看书。 我喜欢我的学校。 i'm studying in a beautiful school. There are 30 classes in it. There is a blackborad in our classroom and a teacher's desk is in front of it. There are 43 students in our class; 24 girls and 19 boys. Our school has a yard, a palyground and a library. Sometimes we go playing in the yard, run on the playground and read in the library. I love our school.