单词：one seventh
单词：one seventh 相关文章
F15-E. They started to come out only at night. They started to take advantage of environmental conditions which made it difficult for us to see them. And they began to move their operations' areas farther north. The intense air attacks on Scud sites
国家地理2007年
Very roomy. For a single-seat fighter it's spacious. Plenty of room to lay out stuff we carry with us. The nose is cut and you won't see any perpendicular surfaces go around. The four probes in the front are not machine guns. And they are not hologra
国家地理2007年
(There's also a piece of safety wire that, em, showed up on the X-ray. So we have to...) In fact just the opposite proved true, the number of air planes ready to fly at any given time actually increased during the war. F-15s went from an 85 percent p
国家地理2007年
Hundreds of coalition airplanes were in the sky at any one time. Airborne warning and control system airplanes better known as AWACS kept air traffic straight. Largely thanks to AWACS there were no air-to-air friendly fire incidents during the Gulf W
国家地理2007年
BEIJING, April 19 (Xinhuanet) -- Almost one year after the disastrous（灾难性的 ） oil spill, scientists believe that the overall health of the Gulf of Mexico as nearly back to normal. However, the scientists restrain their optimism about natur
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