close something off
phrasal verb with close verb uk/kləʊz/ us/kloʊz/
C1 封锁，封闭，关闭（入口）
to put something across the entrance of a place to stop people from entering
Police quickly closed off the area. 警方迅速封闭了该地区。
江苏热线英汉汉英双解词典包含207361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。