形容词
中文翻译：长期存在的
同义词：
['longstanding', 'ancient', 'long-standing例句：1. The company has been in operation for over a century.（这家公司已经运营了一百多年。）']
例句：
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1. The company has been in operation for over a century.
这家公司已经运营了一百多年。
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2. The tradition of the festival is long-dated.
这个节日的传统可以追溯到很久以前。
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3. The building was constructed in the 19th century and is now considered long-dated.
这座建筑建于19世纪，现在被认为是历史悠久的建筑。