形容词
中文翻译：预先存在的
同义词：
['antecedent', 'preceding', 'prior例句：1. The preexistent plan was to meet at the park.（预先计划的是在公园见面。）']
例句：
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1. The preexistent plan was to meet at the park.
预先计划的是在公园见面。
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2.The preexistent knowledge of the subject matter is crucial for success.
对主题的预先知识对于成功至关重要。
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3. The preexistent conditions had a significant impact on the outcome.
预先的条件对结果产生了重大影响。