名词
中文翻译：天球仪
同义词：
['astrolabe', 'celestial globe']
例句：
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1.The armillary sphere is a crucial tool for astronomers to study the stars.
天球仪是天文学家研究星星的重要工具。
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2.The armillary sphere was used by ancient astronomers to measure the positions of the planets.
古代天文学家使用天球仪来测量行星的位置。
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3.In medieval times, armillary spheres were often made from precious metals and were considered symbols of power and knowledge.
中世纪时期，天球仪通常由珍贵的金属制成，被视为权力和知识的象征。