Researchers used a special laser 3D printing method to melt fake lunar soil into layers and fused it with a base surface to manufacture small, heat-resistant objects, potentially paving the way to more sustainable and cost-effective space missions, a new study suggests.

· · 来源：tutorial资讯

print u"\u001b[40m A \u001b[41m B \u001b[42m C \u001b[43m D \u001b[0m"

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Solving_a_puzzle.mp4，更多细节参见体育直播