名词
中文翻译：天书
同义词：
['mysterious book', 'ancient text']
例句：
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1. The ancient texts are still studied by scholars today.
古代文本今天仍然被学者研究。
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2. The mystical tale of the dragon is a popular folk story in many cultures.
龙的神秘传说是许多文化中的流行民间故事。
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3. The mysterious book contains secrets that no one has ever uncovered.
这本神秘的书包含了无人知晓的秘密。