impediment [im'pedimənt] US UK
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n. 妨碍,阻碍（物）
noun
a physical problem that makes speaking, hearing, or moving difficult
〔生理疾病所致的〕言语（听觉，行动）障碍:
a speech impediment
口吃
a situation or event that makes it difficult or impossible for someone or something to succeed or make progress
阻碍，障碍（物）; 绊脚石:
War is one of the greatest impediments to human progress.
战争是人类进步最大的绊脚石。
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