英语词汇“pre-existing”的释义、用法及例句-英汉例句词典

词汇	pre-existing
例句	An expert system is a program which organizes and presents pre-existing knowledge.专家系统是一套能够整理并呈现既有知识的电脑程式。The insurance will not cover you for a pre-existing condition.该保险不承保你已患的疾病。
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