silent epidemic
📖 释义
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不为人知的流行病; 无声的社会问题
💬 例句
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Measles has become a silent epidemic in many developing nations.
麻疹在许多发展中国家已成为一场不为人知的流行病。
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Loneliness among the elderly is a silent epidemic in modern society.
老年人的孤独是现代社会中一个不为人知的社会问题。