圆桶
发表于 2025-3-23 09:48:52
https://doi.org/10.1007/978-1-4020-6477-7Gravity, also named as gravitation, is a physical phenomenon of pulling force of two objects with masses.
创造性
发表于 2025-3-23 15:47:27
https://doi.org/10.1007/978-1-4020-6477-7In space, astronauts must pay even more attention to their health and physical conditions than we do on Earth. How do astronauts measure their body weight on the space station? Can they use a spring scale or balance like they do on the ground?
悬挂
发表于 2025-3-23 20:27:35
https://doi.org/10.1007/978-1-4020-6477-7Gyro toy for children has existed for thousands of years. Examples are found in archeological artifacts from many societies around the world.
职业拳击手
发表于 2025-3-24 02:06:48
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排斥
发表于 2025-3-24 06:03:52
https://doi.org/10.1007/978-1-4020-6477-7On the ground, looking up at the stars in the night sky is indeed a pleasant and romantic thing, and evokes infinite reverie.
中止
发表于 2025-3-24 08:49:20
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最小
发表于 2025-3-24 13:10:12
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积习已深
发表于 2025-3-24 17:49:52
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notion
发表于 2025-3-24 20:18:04
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Nutrient
发表于 2025-3-24 23:30:43
Free Fall and Weightlessness in Gravity,Gravity, also named as gravitation, is a physical phenomenon of pulling force of two objects with masses.