Our solar system
The Solar System is over 4billion years old!
太阳系已经有超过40亿年的岁数啦!
Neptune has many moons, it has at least 13!
海王星有许多的卫星，至少有13个!
The summers are long on Uranus, they last 21years!
在天王星上，夏天可以持续整整2!
Saturn is do light that if we could put it in the bath it would float!
土星很轻很轻，如果我们把他放到装满水的浴缸里，他都能漂浮起来!
Jupiter is the biggest planet in our Solar System.
木星是我们整个太阳系中 大的一颗行星!
Comets are huge balls made of ice, dust and rocks.
彗星是一个个巨大的球体，由冰、灰尘以及岩石组成的。
The asteroid belt is between Jupiter and Mars.
小行星带介于木星与火星之间。
Rusty rocks on Mars have made the planet red!
火星上锈色的岩石令整个行星看上去都红了!
Earth zooms around the Sun at 30km/sec.
地球绕太阳公转的速度是30km/s。
Venus and Earth are like twins, they are the same size!
金星和地球就像是双胞胎，他们的尺码相同!
Mercury is so tiny that 18 would fit inside the Earth!
水星十分的小，18个水星合并起来才抵得上一个地球的大小!
The sun is really hot, more than 15 millionC!
太阳真的很热很热，超过1500万摄氏度!
There are more than 200 billion stars in our galaxy!
在我们的银河系有超过2000亿的恒星!
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