Spring Festival travel rush is the largest human migration in the world.
春运可以说是世界规模最大的人类迁移。
The article was 300 characters long and focused onthe Spring Festival travel rush.
这篇稿件篇幅为300字，并聚焦于春运潮问题。
The Spring Festival travel rush poses severe challenges to China's public transportation system.
春运是对中国公共交通系统的严峻挑战。
The Spring Festival travel rush poses severe challenges to China's public transportation system.
春运是对中国公共交通系统的严峻挑战。
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