英语词汇“blocked tear duct”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	blocked tear duct
释义	blocked tear duct blocked tear duct A blocked nasolacrimal duct which normally carries tears from the eyes to the nose. Blocked tear ducts occur in up to 20% of infants at birth, which usually resolves spontaneously within the first year of life. A blocked tear duct in an adult is more ominous, and is caused by infection, inflammation, an injury or a tumour.
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