...报关 apply to customs; declare at customs 闭关 to seal off the country; to close the passes 边关 strategic defensive position on frontier; border station ..
Chinese pirated video games and cell phones sell alongside North Korean knock-offs throughout thecountry, causing the police to often raid the establishments and finally sealoffthe properties with concrete blocks.
Meanwhile a country such as Panama would prefer a cooler world in which ice continues tosealoffthe North-West Passage and to prevent competition with its canal.