这个浴室使用抽风扇通风。The bathroom is ventilated by means of an extractor fan.风扇正吹着.The fan was blowing.必须用巨大的风扇来冷却混凝土地面，将其温度控制在150度以下。Huge fans will have to cool the concrete floor to keep it below 150 degrees....
Police formed a cordon between the two crowds.警察在两群人之间筑起了一道封锁线。Police officers threw a cordon around his car to protect him.警察在他汽车周围设置了防卫圈以保护他。There is a tight security cordon around the area.这一地区周围设有严密的安全警戒圈。a cordon bl...