太空电梯 – 2 层
24-04-2024 15:00
从 19 世纪起，科学家们就开始考虑建造太空电梯。
进入太空并不便宜，因为火箭必须携带大量燃料才能离开地球。因此，前往月球或火星需要花费数百万美元。太空电梯将使进入太空的费用大大降低。
问题是，人们并不具备建造这种电梯所需的技术和材料。专家们想到了使用碳纳米管。这种材料比任何其他材料都要坚固，但即使有可能建造电梯，环绕地球的小物体也可能会损坏它。
您可以在第 3 层观看原始视频。
除第一句话外，建造太空电梯面临哪些挑战，有哪些材料可能克服这些挑战？
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Chinese in Levels is designed to teach you 3000 words in Chinese. Please follow the instructions
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How to improve your Chinese with Chinese in Levels:
Reading
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Listening
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Writing
- Answer the question under today’s news and write the answer in the comments.