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A temporary fence or railing erected by the police to restrict public access to a particular area, especially when large crowds are expected.
Late 19th century; earliest use found in The Times.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。