参考翻译
Transportation during the Spring Festival Period is considered to be the largest annual migration.It is the special period when China faces an extremely heavy traffic load,which results in great transportation problems,especially on the railway services. Millions of people working or studying far away from their hometowns will come back home to reunite with their families as the Chinese Spring Festival approaches.This long-held tradition is the main reason for the rush.The other is that the holiday is one of the two long holidays of one week in the year, and for many people,it's a perfect travel time.