Comets

基本解释

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英汉例句

• Comets move around the sun like planets, but in long oval course.
  彗星象行星一樣繞太陽運轉，然而其軌道呈狹長的橢圓形。
• That comet is invisible to the unaided eye.
  那顆彗星衹用肉眼是看不到的。
• We can see comets only when they come close to the earth.
  衹有儅彗星接近地球時,我們才能看得見它們。
• A comet is at perihelion when it is closest (=very close) to the sun.
  彗星最接近太陽時，它就是在近日點。
• If I had binoculars, I could see that comet clearly.
  如果我有望遠鏡，我就可以清楚地看見那顆彗星。

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