单词：block off
block off的用法和样例：
例句
- Police sealed off all roads leading to the town.警察封锁了通向该城镇的所有道路。
- Their aim was to block guerrilla supply lines.他们的目的是封锁游击队的供给线。
- As the rotor turns clockwise the charge is sealed off and compression begins.当转子顺时针方向转动时，送进的气团就被封闭，并开始压缩。
- For instance, he recalls meeting with the town mayor to ask permission to block off streets for a student fundraiser.举例来说，他记得有一次必须会见该市市长请求封闭街道来进行学生募款运动。
词汇搭配
- block off封锁
- off one's block发病
- knock block off[俗]笞打(某人),...
- chip off the old block与父亲一模一样的儿子...
- knock someone's block off重重地打某人的头...
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