北极航线英文.ppt

Polar route 杜昌林 071150109 Words and expressions 1. region n. 区域；（大气）层，界，境； 2. buffer n.缓冲器；vt.缓冲 3. navigational adj.航行的，航海的 4. obstacle n.障碍物 5. inadequate adj.不充足的；不适当的 6. coordinate vt.使协调；整合；vi.协调 7. hemisphere n. 地球的半球 8. nonstop adj.直达的；不停的； 9. capability n.才能，能力 10. strand vt.使陷于困境，使搁浅 11. cruise vi.巡游；漫游；巡航 12. stratosphere n.[气]平流层，同温层；最上层 Background Hitler invaded the Soviet Union, then the Soviet Union joined the anti-fascist allies, so the British Prime Minister Churchill announced to support and aid to the Soviet union. At that time, there were three ways to carry war supplies to the Soviet Union: the railway between the Persian Gulf and Iran; the Pacific route between Tsugaru Strait and soya-kaikyo Strait; The Arctic route. Due to various reasons, former two ways were very limited, most supplies must use the Arctic route . All the time since, the air line flying over Arctic is the shortest route to link Asia, Europe and North America three continents. A polar route refers to an aircraft route across the uninhabited polar ice cap region.极地航线指的是飞过极地无人的冰层覆盖区的航线。  The American Federal Aviation Administration defines the North Polar area of operations as the area lying north of 78 deg north latitude, which is entirely north of Alaska and most of Siberia. 美国联邦航空管理局定义北极运营区为北纬78度以上的地区，包含整个阿拉斯加的北部和大部分的西伯利亚。 The term polar route was originally more general, being applied to great circle routes between Europe and the west coast of North America in the 1950s.术语“极地路线”最初很普遍,被应用在指1950年代欧洲和北美西海岸的大圆航线。  Korean Air Lines Flight 902 was shot down in the USSR in 1978 after the crew made gross navigational errors attempting to fly the assigned polar route. 1978年，大韩航空902号班机在试图飞预设的北极航线造成严重的飞行错误后被苏联击落。 Routine transpolar flight deep into the Arctic became possible only after the end of the Cold War, when the Unit