英语翻译It occupies a roughly circular basin and covers an area

英语翻译
It occupies a roughly circular basin and covers an area of about 14090000km.Nearly landlocked,the ocean is surrounded by the land messes of Europe,Asia.North American ,and Greenland and a number of islands,as well as by the Barents,Beaufort,Chukchi,Kara,Laptev,East Seberian,Lincoln,Wandel,Greenland,and Norwegian seas.It is connected to the Pacific Ocean by the Bering Strait and to the Atlantic Ocean through the Greenland Sea.An underwater ocean ridge,the lomonosov ridge,divides the Arctic Ocean into two basin:the Eurasia,or Nansen,Basin,which is between4000and4500m deep,and the North American,or Hyperborean,Basin,which is about 4000mdeep.The topography of the ocean bottom is marked by fault-block ridges,plains of the abyssal zone,ocean deeps,and basins.The average depth of the Arctic Ocean is 1038m,in part due to the large extent of continental shelf extant on the Eurasian side.
The greatest inflow of water comes from the Atlantic by way of the Norwegian Current,which then flows along the Eurasian coast.Water also enters from the pacific via the Bering Strait .The East Greenland Current carries the major outflow .Temperature and salinity vary seasonally as the ice cover melts and freezes .Ice covers most of the ocean surface year-round.causing subfreezing temperatures much of the time.The Arctic is major source of very cold air that inevitably moves toward the equator,meeting with warmer air in the middle latitudes and causing rain and snow.Little marine life exists where the ocean surface is covered with ice throughout the year.Marine life abounds in open areas,especially the more southerly water.The ocean’s major ports are the Russian cities of Murmansk and Arkhangelsk (Archangel).The Arctic Ocean is important as shortest air route between the Pacific coast of North America and Europe overflies it.