动词中文翻译
中文翻译：预先存在
同义词：
['exist before', 'be in existence before']
例句：
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1.The pre-existing conditions made it difficult for him to perform well.
预存在的条件使他难以表现良好。
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2. Before the meeting, he had already prepared a lot of materials.
会议前，他已经准备了很多材料。
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3.The pre-existing plan was not suitable for the new situation.
原有的计划不适合新的情况。