The Red Planet
💡 指示: 火星とその特徴に関する語彙問題です。
Mars is the fourth plan [1] from the Sun. It is known as the Red Planet because its sur [2] is covered in rusty dust. Scientists believe that bil [3] of years ago, Mars had liquid wa [4] like Earth. Today, robotic ro [5] drive across the dry ground to search for si [6] of ancient life.
The atmosphere on Mars is very th [7] , consisting mos [8] of carbon dioxide. It is too cold for humans to live there without protec [9] . However, space agencies aim to send astro [10] to explore this mysterious world in the future.
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