We should try our best not to pollute the environment and appeal the people around us make their effort to protect our unique home.

我们要尽量不污染环境，还要呼吁我们周围的人努力来保护我们唯一的家园。

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From 220 miles above Earth on the International Space Station, American astronaut Ron Garan certainly has a unique perspective of our home planet.

MSN: Earth From Space: An Astronaut's Quest to Protect Our 'Fragile Oasis' - Technology & science - Space - Space.com | NBC News