Asteroids, also known as "minor planets", are numerous in the outer space.
小行星，亦称为“小型行星”，在外太空中。
Asteroids, also known as "minor planets", are numerous in the outer space.
小行星，亦称为“小型行星”，在外太空中不计其数。
He devoted himself to observing and calculating the orbits of minor planets and comets.
张钰哲致力于观察和计算小行星和彗星的轨道。
Proposers should remember that names of minor planets are not the same as the names of people.
申请人应该知道给小行星命名和给人取名字不一样。
But volcanoes aren't history's greatest killers - that title goes to asteroids, that is, minor planets.
但火山爆发不是历史上最大的杀手-这个名称属于小行星，也就是很小的行星。
Asteroids are minor planets, most of which circle the sun in a region known as the asteroid belt, between the orbits of Mars and Jupiter.
小行星是较小的行星，它们中的大部分在火星和木星轨道间的小行星带中环绕太阳运行。
For the main part, that's it for the solar system — including a whole host of satellites orbiting the main planets and countless minor planets (including Pluto) and comets.
总体来说，以上所述的就是太阳系了——包括围绕主要行星们运转的卫星、数不胜数的小行星(包括冥王星)以及彗星。
The terrestrial planets are mostly rocks: dense rocky and metallic material, with minor amounts of gases.
类地行星主要是岩石：密度大的石块和金属物质，同时会有少量的气体。
The terrestrial planets are mostly rocks: dense rocky and metallic material, with minor amounts of gases.
类地行星主要是岩石：密度大的石块和金属物质，同时会有少量的气体。
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