介词短语
中文翻译：在古代
同义词：
['in the past', 'in olden times例句：1. The book was written in ancient times.（这本书是在古代写的。）']
例句：
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1. The book was written in ancient times.
这本书是在古代写的。
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2. Many of the buildings were built in ancient times.
许多建筑都是在古代建造的。
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3. It is said that the ancient times are full of wonders.
据说古代充满了奇迹。