"Our Blue Planet".
This sentence is both a praise and a pity for the earth. In recent years, the rapid melting of glaciers has seriously affected all kinds of life. The glaciers on the polar regions disappeared and turned into small ice floes, and the walruses had no place to stand and could only go to land.
The blue planet has brought me to the magical and beautiful underwater world, and it has given me a deeper understanding that we should take good care of our ecology and protect our oceans. The earth is a veritable blue planet.
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