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And in fact, these stable orbits only exist in a three dimensional universe.
而事实上,这些稳定轨道只存在于三度空间所构成的宇宙。
《TOFEL(无字幕版)》《托福学习视频》
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The physics is almost identical to the stable orbits of planets, satellites, and moons.
其中的物理作用和星球、人造卫星以及月亮所运行的稳定轨道相似程度极高。
《TOFEL(无字幕版)》《托福学习视频》
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Thank you, stable orbits, for without you, life as we know it, and especially cheese, would be impossible.
感谢你!稳定的轨道!因为没有你,生命就会像我们所知道的,特别是瑞士干酪,不可能发生!
《TOFEL(无字幕版)》《托福学习视频》
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PS: An awesome down-to-earth example of stable orbits are the hyperbolic funnels that you often see at museums or in shopping malls.
备注:一个非常棒且实际关于稳定轨道的例子是我们经常能够在博物馆或是购物中心看见的大型"漏斗"。
《TOFEL(无字幕版)》《托福学习视频》
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So we're incredibly lucky to live in a three dimensional universe where there ARE stable orbits that allow planets, solar systems, and galaxies to exist at all.
所以,我们存在这个三维空间宇宙,具备着能够让行星、太阳系和银河系稳定存在的轨道,是何等不可思议的幸运呀!
《TOFEL(无字幕版)》《托福学习视频》
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The moon orbits the earth once every 27 days.
月球每27天绕地球一周。
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Mars and Earth have orbits which change with time.
火星和地球的轨道随着时间而发生改变。
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In molecular orbital theory, we named orbits based on their symmetry.
在分子轨道理论中,我们基于轨道的对称性给它们命名。
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The orbits of Mercury, Venus, Earth, Mars, Jupiter and Saturn fit neatly into this pattern; Uranus, discovered in 1781, also obeyed the law.
水星、金星、地球、火星、木星和土星的轨道恰好符合这种模式;1781年发现的天王星也同样符合该定律。
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The Earth orbits in an ellipse.
地球沿椭圆形轨道运动。
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So, orbits in general are ellipses.
所以,轨道总体上说是椭圆的。