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Welcome to the Voice of America's News Words.
欢迎收看美国之音：新闻词汇。
In October, thousands of migrants fled their homes in Central America and began walking toward Mexico and the U.S. border.
去年10月，成千上万的移民逃离他们在中美洲的家园，步行前往墨西哥和美国边境。
Caravan. Many migrants were traveling to seek asylum in the United States.
旅行队。许多移民前往美国寻求庇护。
Some in the caravan walked more than 4000 kilometers.
其中有些人步行超过4000公里。
After reaching the Mexican town of Tijuana on the U.S border, hundreds are still waiting to apply for asylum.
在到达美国边境的墨西哥小镇提华纳后，数百人仍在等待申请庇护。
In this example, a caravan is a group traveling together on a long journey.
在这个例子中，caravan指的是一群参加长途旅行的人。
Historically, a caravan describes travelers through the desert or hostile areas often for trade purposes.
从历史上看，caravan描述的是经常为了贸易目的而穿越沙漠或敌对地区的旅行者。
