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41. | "Typically they move in geosynchronous orbits about 22,300 mi (35,900 km) above the earth and operate |
| "典型的通讯卫星位于地球同步轨道,约在地球上方35,900公里处,操作频率向地传输4吉赫(GHz),向上传输为6吉赫。" |
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42. | In 1977, an airplane went high above the atmosphere of Earth and carried a telescope to look at Uranus |
| 在1977年,一架携带了天文望远镜的飞机飞出地球大气层以便更清楚地观察天王星。 |
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43. | Caption:: In space, orbit above the Earth, when the sun is setting and bypassing the thin atmospheric |
| 在太空中,太阳经过地球薄薄的大气层然后西沉,在这段短暂的时间,色彩在薄薄的大气层化幻成无穷的层次,是太空中的奇景。 |
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44. | creatures on this planet is figured not only in square measure of surface but also in cubic volume above |
| 我们要认识到大树的重要性,因为动物的生存空间不仅应按平方面积来计算,还应按立方体积来计算。 |
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45. | A few days earlier, the Solar arid Heliospheric Observatory (SOHO), high above the earth, had captured |
| 几天前,地球上空的太阳及日光层观测站(SOHO)曾抓拍到另一种太阳现象的图象----太阳表面异常大的红焰,即从太阳表面喷射出来的80万英里宽的燃烧的气环。 |
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46. | awe-struck and worshipful, on a vision which is not less but more wonderful because it shines nightly above |
| 如果星辰每一千年才照耀一次大地,人们将怀着敬畏尊崇的心情凝视那种美,而那种美景如果夜夜在全世界的上空出现,不但不会减损,反而更为增加它的奇妙。 |
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