block offblock off1.■关闭; 封闭; 封锁The police blocked off the street where the gunman was hiding.警察封锁了持枪歹徒躲藏的那条街。The gas pipe has been blocked off to prevent escapes.煤气管道已被关闭, 以防漏气。
block off1.■阻挡,制止,堵塞,封锁,阻隔:to block off a street to traffic阻断街道交通2.■封闭,关闭:to block off the gas pipe关闭天然气管道
见:block: block off