Comets

Most stars probably have their quota of planets, meteorids, comets, and asteroids.

多数恒星也许还拥有若干行星 、 流星 、 彗星和小行星.

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Comets are usually made of ice and rock.

彗星通常是由岩石和冰构成的.

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The earth crosses the tracks of certain comets.

地球穿过某些彗星的轨迹线.

《简明英汉词典》

In addition, there are thousands of small bodies as asteroids and comets.

此外, 被发现的还有成千上万的小型天体像是小行星和彗星.

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We can see comets only when they come close to the earth.

只有当彗星接近地球时,我们才能看得见它们.

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Early Studies were connected with the origin of short-period comets.

早期的研究是为了探讨短周期彗星的起源.

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The night sky is occasionally host to the transient visitors known as comets and meteors.

夜空有时还接待如彗星和流星那样的过路来访者.

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We need to study more comets.

我们需要研究更多的首星.

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They were stars, I knew, and flaring comets, that peopled my flight among the suns.

我知道是这些星辰和闪烁的慧星遍布在我飞行恒星之间的航程中.

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These small objects, including asteroids, Kuiper Belt objects, comets and interstellar dust.

这些小天体包括小行星 、 柯伊伯带的天体 、 彗星和星际尘埃.

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Perhaps, extinctions are caused by something outside, like comets and asteroids.

也许, 灭绝是由外来物体引起的, 比如彗星和小行星.

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Scientists want to learn how comets come into being.

科学家们想了解彗星是怎么形成的.

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As comets go, it is a whopper.

就彗星而言，它可是个庞然大物。

《柯林斯高阶英汉双解学习词典》

There are about 800 comets whose orbits are known.

人类已经知道有运行轨道的彗星大约有800颗.

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Any school kid can tell you that comets are made of ice.

随便找个小学生都会告诉你,彗星是由冰组成的.

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