Saturn is the second biggest planet in the solar system.
土星是太阳系的第二大的行星。
The new planet is about ten times the size of the earth.
这个新发现的行星大约是地球大小的10倍。
Is there a core in the planet?
这个星球有核心吗？
Their enemies ruined their planet.
他们的敌人摧毁了他们的星球。
Rock on a planet is also important.
行星上的岩石也很重要。
It was way too faint to be a planet.
它太暗了，不可能是行星。
Once, there was a little grey planet.
曾经，有一个小小的灰色星球。
That's key to understanding planet formation.
这是理解行星形成的关键。
That's not so good for you, or for the planet.
这对你或者地球都不是好事。
We can't sit by and watch our planet destroyed.
我们不能坐视地球被破坏而不理。
Why are they so unevenly spread across the planet?
为什么它们在地球上分布得如此不均匀？
The sun is the major source of energy for our planet.
太阳是我们星球能量的主要来源。
Do you know that one-fifth of the planet speaks Chinese?
你知道地球上有五分之一的人说中文吗？
Forget Gaia, save a marsh; forget the planet, save a frog.
忘记地球，去拯救一片湿地；忘记行星，去拯救一只青蛙。
This would change the geography of the planet considerably.
这将大大改变地球的地形。
Logically, one day they must: the planet is a finite place.
从逻辑上讲，总有一天他们必须这样做：因为地球是一个有限的空间。
Scientists think there was probably water on the planet long ago.
科学家们认为很久以前在那个行星上可能有水存在。
That may sound like a description of every teenager on the planet.
这听起来可能像是对这个星球上每个青少年的描述。
For seven million years they lived on the planet as part of nature.
七百万年来，他们作为大自然的一部分在这个星球上生活。
That means one out of six people on the planet uses Huawei hardware.
那意味着，地球上每六个人中，就有一个人使用华为的硬件。
The planet was practically covered in ice just a few thousand years ago.
几千年前，地球几乎全部被冰覆盖。
Let us suppose another planet with conditions similar to those on the earth.
让我们假设另一个星球的情况与地球上的相似。
We hope what we are doing will draw people's attention to protect our planet.
我们希望我们所做的能引起人们的关注来保护我们的星球。
It was about 6, 500 kilometers long and went across one fourth of the planet.
它大约有6500公里长，覆盖了地球的四分之一。
Of course, that may sound like a description of every teenager on the planet.
当然，这听起来可能像是对这个星球上每个青少年的描述。
The advertising message was, basically, "use this eco-light and save the planet".
广告语的大意是，“使用这种环保灯，拯救地球”。
Until recently, scientists believed that life on other planet was just a hopeful dream.
直到最近，科学家们还认为其他星球上的生命只是一个充满希望的梦。
Our planet Earth is comparatively small, with only about 24,902miles around the equator.
我们的地球相对来说比较小，绕赤道一周只有24902英里。
Only by protecting the environment can we assure our later generation of a beautiful planet.
只有通过保护环境，我们才能向子孙后代承诺给他们一个美丽的地球。
Only by protecting the environment can we assure our later generation of a beautiful planet.
只有通过保护环境，我们才能向子孙后代承诺给他们一个美丽的地球。
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